Finding the Fourth Proportional to 21,306,942.92, 29,403,589.94 and 11,517,387.08
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Solution
The fourth proportional to 21,306,942.92, 29,403,589.94 and 11,517,387.08 is: 15,893,998.87
Step by Step Solution
- Step 1: Write the proportion equation
21,306,942.92 : 29,403,589.94 = 11,517,387.08 : x - Step 2: Convert to fraction form
21,306,942.92/29,403,589.94 = 11,517,387.08/x - Step 3: Cross multiply
21,306,942.92x = 29,403,589.94 × 11,517,387.08 - Step 4: Simplify right side
21,306,942.92x = 338,652,526,744,318.81 - Step 5: Solve for x
x = 338,652,526,744,318.81/21,306,942.92 - Step 6: Final answer
x = 15,893,998.87
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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.