Finding the Fourth Proportional to 21,407,728.60, 29,542,770.63 and 11,618,184.03
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Solution
The fourth proportional to 21,407,728.60, 29,542,770.63 and 11,618,184.03 is: 16,033,151.03
Step by Step Solution
- Step 1: Write the proportion equation
21,407,728.60 : 29,542,770.63 = 11,618,184.03 : x - Step 2: Convert to fraction form
21,407,728.60/29,542,770.63 = 11,618,184.03/x - Step 3: Cross multiply
21,407,728.60x = 29,542,770.63 × 11,618,184.03 - Step 4: Simplify right side
21,407,728.60x = 343,233,345,935,419 - Step 5: Solve for x
x = 343,233,345,935,419/21,407,728.60 - Step 6: Final answer
x = 16,033,151.03
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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.