Question

Find the value of x in the following proportion

7:15 : : X : 30​

Answer 1

7 : 15 : : x : 30

Product Of Means = Product of extremes

15 × x = 7 × 30

15x = 210

x = $\frac{210}{15} = 14$

So, value of x is 14.

Answer 2

7/15 = x/30

x = 7*30/15

= 14

Hence, x = 14