Finding the Fourth Proportional to 12,115,545.68, 16,721,262.60 and 7,769,539.28
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Solution
The fourth proportional to 12,115,545.68, 16,721,262.60 and 7,769,539.28 is: 10,723,124.65
Step by Step Solution
- Step 1: Write the proportion equation
12,115,545.68 : 16,721,262.60 = 7,769,539.28 : x - Step 2: Convert to fraction form
12,115,545.68/16,721,262.60 = 7,769,539.28/x - Step 3: Cross multiply
12,115,545.68x = 16,721,262.60 × 7,769,539.28 - Step 4: Simplify right side
12,115,545.68x = 129,916,506,581,894.92 - Step 5: Solve for x
x = 129,916,506,581,894.92/12,115,545.68 - Step 6: Final answer
x = 10,723,124.65
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1.5x scale
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.