Question

Third and fourth term of and proportion are 18 27 and 36 respectively find the second term

Answer 1

The first, third and fourth terms of a proportion are 18, 27 and 36 respectively. Then the second term is 24

Solution:

Given that,

The first, third and fourth terms of a proportion are 18, 27 and 36 respectively

We have to find the second term

Let "x" be the second term

Then, by proportion

18 : x : : 27 : 36

Which means,

$\frac{18}{x} = \frac{27}{36} \\\\x = 18 \times \frac{36}{27} \\\\x = 24$

Thus the second term is 24

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Answer 2

Given :

• Third and fourth term of and proportion are 18, 27 and 36 respectively.

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Find :

• what is the second term?

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Concept :

• As per the concept of this question, we have to find the unknown term and the value of the unknown value, let us assume variable "a" as the second term.

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• We know that the proportion form is 18:a :: 27:36.

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Calculations :

→ 18/a = 27/36

→ 18 × 1.3

→ 23.4 (Approx)

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• Required proportion form:

→ 18 : 23.4 :: 27 : 26

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Therefore, 23.4 is the second term and the value of (a = 23.4).