Question

find the fouth term of the proportion whose first second and third terms are 18 , 27 and 32 respectively.​

Answer 1

a1=18

a2=27

a3=32

a2-a1=d

27-18

9=d

a4=a3+d

a4=32+9

a4=41

Answer 2

Answer:

Let the fourth term=x

18 : 27 :: 32 : x

=> 18*x =27*32

=> x= 27*32/18 =864/18 =48

fourth term = 48