Finding the Fourth Proportional to 21,711,278.98, 29,960,202.42 and 11,921,654.62
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Solution
The fourth proportional to 21,711,278.98, 29,960,202.42 and 11,921,654.62 is: 16,451,135.19
Step by Step Solution
- Step 1: Write the proportion equation
21,711,278.98 : 29,960,202.42 = 11,921,654.62 : x - Step 2: Convert to fraction form
21,711,278.98/29,960,202.42 = 11,921,654.62/x - Step 3: Cross multiply
21,711,278.98x = 29,960,202.42 × 11,921,654.62 - Step 4: Simplify right side
21,711,278.98x = 357,175,185,596,528.19 - Step 5: Solve for x
x = 357,175,185,596,528.19/21,711,278.98 - Step 6: Final answer
x = 16,451,135.19
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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.