Question

the 1st 2nd and 4th terms of a proportion are 12,21 and14 respectively. find the third term

Answer 1

third term = 12*14/21

                 =8

Answer 2

The third term is 8.

Step-by-step explanation:

Given : The 1st, 2nd and 4th terms of a proportion are 12,21 and 14 respectively.

To find : The third term ?

Solution :

If the four terms are in proportion $a:b:: c:d$ then $\frac{a}{b}=\frac{c}{d}$

The 1st, 2nd and 4th terms of a proportion are 12,21 and 14 respectively.

i.e. a=12, b=21 and d=14

Substitute,

$\frac{12}{21}=\frac{c}{14}$

$c=\frac{12\times 14}{21}$

$c=8$

Therefore, the third term is 8.

#Learn more

In a proportion , the 1st, 2nd and 4th terms are 51,68,108 respectively. Find the 3rd term.

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