Question

Q23. The first three terms of a proportion are 20, 28, and 30. Find the fourth term.​

Answer 1

Let the fourth term = x

18:27::32:x18:27::32:x

⇒ 18×x=27×32

⇒ x= 27×32/18

=3×16=48

Fourth term = 48

Same as upper

let the fourth term be x

20:28::30:x

20×x=28×30

x=28×30/20

x=7×30/5

x=210/5

x= 42

fourth term = 42

So, ur ans is 42