Finding the Fourth Proportional to 18,713,545.27, 27,953,620.93 and 13,865,320.96
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Solution
The fourth proportional to 18,713,545.27, 27,953,620.93 and 13,865,320.96 is: 20,711,517.81
Step by Step Solution
- Step 1: Write the proportion equation
18,713,545.27 : 27,953,620.93 = 13,865,320.96 : x - Step 2: Convert to fraction form
18,713,545.27/27,953,620.93 = 13,865,320.96/x - Step 3: Cross multiply
18,713,545.27x = 27,953,620.93 × 13,865,320.96 - Step 4: Simplify right side
18,713,545.27x = 387,585,926,188,623.69 - Step 5: Solve for x
x = 387,585,926,188,623.69/18,713,545.27 - Step 6: Final answer
x = 20,711,517.81
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Why These Related Problems?
These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.