Finding the Fourth Proportional to 21,354,275.99, 29,471,832.78 and 13,092,877.28
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Solution
The fourth proportional to 21,354,275.99, 29,471,832.78 and 13,092,877.28 is: 18,069,968.28
Step by Step Solution
- Step 1: Write the proportion equation
21,354,275.99 : 29,471,832.78 = 13,092,877.28 : x - Step 2: Convert to fraction form
21,354,275.99/29,471,832.78 = 13,092,877.28/x - Step 3: Cross multiply
21,354,275.99x = 29,471,832.78 × 13,092,877.28 - Step 4: Simplify right side
21,354,275.99x = 385,871,089,805,221.25 - Step 5: Solve for x
x = 385,871,089,805,221.25/21,354,275.99 - Step 6: Final answer
x = 18,069,968.28
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.