Question

if the following quantities are in proportion, find the value of x (15:x : : 3:4)
step by step ​

Answer 1

Answer:

15:x::3:4

product of means = product of extremes

x×3=15×4

3x = 60

$x = \cancel{\frac{60}{3}} \\ {\boxed{x = 20}}$

i hope it will help you dear...

Answer 2

Answer:

(15:x::3:4)

product of extremes =product of means

so,15*4=x*3

60 =x*3

x =60/3

x=20