Finding the Fourth Proportional to 10,391,882.40, 15,545,833.20 and 8,987,536.80
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Solution
The fourth proportional to 10,391,882.40, 15,545,833.20 and 8,987,536.80 is: 13,444,989.33
Step by Step Solution
- Step 1: Write the proportion equation
10,391,882.40 : 15,545,833.20 = 8,987,536.80 : x - Step 2: Convert to fraction form
10,391,882.40/15,545,833.20 = 8,987,536.80/x - Step 3: Cross multiply
10,391,882.40x = 15,545,833.20 × 8,987,536.80 - Step 4: Simplify right side
10,391,882.40x = 139,718,747,971,661.77 - Step 5: Solve for x
x = 139,718,747,971,661.77/10,391,882.40 - Step 6: Final answer
x = 13,444,989.33
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.