Question

If 20, 25, 15 and x are in proportion, find the value of x.
(a) 14
(b) 18
(c) 21
(d) 24​

Answer 1

Answer:

answer to this question will be 75/4.

but in the options it is not there

Answer 2

(b) 18.

• Ratio and fractions are the main bases on which proportion is explained. Two ratios are equal when they are expressed as a fraction in the form of , ratio a:b, and then a proportion. In this case, a and b can be any two integers. The ratio and proportion are important building blocks for understanding the numerous ideas in science and mathematics.
• Numerous challenges in daily life can be solved with proportion, including those in business when handling transactions or in the kitchen, among other situations. It creates a relationship between two or more quantities and aids in comparing them.

Here, according to the given information, we are given that,

We need to find a fourth proportional to the numbers 20, 25 and 15.

Then, we have,

$\frac{20}{25} =\frac{15}{x} .$

Or, $x = \frac{15}{20} .25$ ≅ 18.

Hence, option b is correct.

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