Finding the Fourth Proportional to 10,391,878.40, 15,545,827.20 and 8,987,532.80
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Solution
The fourth proportional to 10,391,878.40, 15,545,827.20 and 8,987,532.80 is: 13,444,983.33
Step by Step Solution
- Step 1: Write the proportion equation
10,391,878.40 : 15,545,827.20 = 8,987,532.80 : x - Step 2: Convert to fraction form
10,391,878.40/15,545,827.20 = 8,987,532.80/x - Step 3: Cross multiply
10,391,878.40x = 15,545,827.20 × 8,987,532.80 - Step 4: Simplify right side
10,391,878.40x = 139,718,631,863,132.17 - Step 5: Solve for x
x = 139,718,631,863,132.17/10,391,878.40 - Step 6: Final answer
x = 13,444,983.33
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1.5x scale
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.