Finding the Fourth Proportional to 12,960,781.04, 17,885,530.68 and 7,159,437.92
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Solution
The fourth proportional to 12,960,781.04, 17,885,530.68 and 7,159,437.92 is: 9,879,832.56
Step by Step Solution
- Step 1: Write the proportion equation
12,960,781.04 : 17,885,530.68 = 7,159,437.92 : x - Step 2: Convert to fraction form
12,960,781.04/17,885,530.68 = 7,159,437.92/x - Step 3: Cross multiply
12,960,781.04x = 17,885,530.68 × 7,159,437.92 - Step 4: Simplify right side
12,960,781.04x = 128,050,346,569,715.38 - Step 5: Solve for x
x = 128,050,346,569,715.38/12,960,781.04 - Step 6: Final answer
x = 9,879,832.56
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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.