Question

Find the fourth proportional to: Rs.6,rs.8,rs.18

Answer 1

Answer:

Step-by-step explanation:6:8::18:x

6*x=18*8

6x=144

x=144÷6

x=24

Answer 2

Answer:

4th term = 24

Step-by-step explanation:

Method :- 1

$\frac{6}{8} = \frac{18}{4th term}$

cross multiplication,

∴ 4th term = $\frac{18 * 8 }{6}$

                 = 3 * 8

                = 24

Method:- 2

$\frac{6}{8} = \frac{18}{4th term}$

$\frac{6* 3}{8*3} = \frac{18}{4th term}$

$\frac{18}{24} = \frac{18}{4th term}$

4th term = 24