Finding the Fourth Proportional to 21,318,617.40, 29,419,923.16 and 11,529,251.84
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Solution
The fourth proportional to 21,318,617.40, 29,419,923.16 and 11,529,251.84 is: 15,910,492.55
Step by Step Solution
- Step 1: Write the proportion equation
21,318,617.40 : 29,419,923.16 = 11,529,251.84 : x - Step 2: Convert to fraction form
21,318,617.40/29,419,923.16 = 11,529,251.84/x - Step 3: Cross multiply
21,318,617.40x = 29,419,923.16 × 11,529,251.84 - Step 4: Simplify right side
21,318,617.40x = 339,189,703,225,088.62 - Step 5: Solve for x
x = 339,189,703,225,088.62/21,318,617.40 - Step 6: Final answer
x = 15,910,492.55
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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.