Question

if 5:4::30:x then x =

Answer 1

5x=4*30
x= 4*30/5
x=4*6
x=24

Answer 2

here,the numbers are in proportion.so,
5/4=30/x.
by cross multiplication,5x=120.
and,x=120/5
thus,x=24.{ans}
thus the answer to the question is 24.