Finding the Fourth Proportional to 21,704,296.43, 29,950,829.14 and 12,884,124.72
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Solution
The fourth proportional to 21,704,296.43, 29,950,829.14 and 12,884,124.72 is: 17,779,439.17
Step by Step Solution
- Step 1: Write the proportion equation
21,704,296.43 : 29,950,829.14 = 12,884,124.72 : x - Step 2: Convert to fraction form
21,704,296.43/29,950,829.14 = 12,884,124.72/x - Step 3: Cross multiply
21,704,296.43x = 29,950,829.14 × 12,884,124.72 - Step 4: Simplify right side
21,704,296.43x = 385,890,218,107,170.38 - Step 5: Solve for x
x = 385,890,218,107,170.38/21,704,296.43 - Step 6: Final answer
x = 17,779,439.17
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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.