Finding the Fourth Proportional to 13,855,805.60, 19,121,678.17 and 7,660,737.68
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Solution
The fourth proportional to 13,855,805.60, 19,121,678.17 and 7,660,737.68 is: 10,572,186.46
Step by Step Solution
- Step 1: Write the proportion equation
13,855,805.60 : 19,121,678.17 = 7,660,737.68 : x - Step 2: Convert to fraction form
13,855,805.60/19,121,678.17 = 7,660,737.68/x - Step 3: Cross multiply
13,855,805.60x = 19,121,678.17 × 7,660,737.68 - Step 4: Simplify right side
13,855,805.60x = 146,486,160,346,992.22 - Step 5: Solve for x
x = 146,486,160,346,992.22/13,855,805.60 - Step 6: Final answer
x = 10,572,186.46
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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.