Finding the Fourth Proportional to 20,881,545.62, 31,318,585.46 and 13,285,948.82
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Solution
The fourth proportional to 20,881,545.62, 31,318,585.46 and 13,285,948.82 is: 19,926,548.12
Step by Step Solution
- Step 1: Write the proportion equation
20,881,545.62 : 31,318,585.46 = 13,285,948.82 : x - Step 2: Convert to fraction form
20,881,545.62/31,318,585.46 = 13,285,948.82/x - Step 3: Cross multiply
20,881,545.62x = 31,318,585.46 × 13,285,948.82 - Step 4: Simplify right side
20,881,545.62x = 416,097,123,536,356.19 - Step 5: Solve for x
x = 416,097,123,536,356.19/20,881,545.62 - Step 6: Final answer
x = 19,926,548.12
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.