Finding the Fourth Proportional to 12,454,615.20, 18,681,922.80 and 7,415,767.20
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Solution
The fourth proportional to 12,454,615.20, 18,681,922.80 and 7,415,767.20 is: 11,123,650.80
Step by Step Solution
- Step 1: Write the proportion equation
12,454,615.20 : 18,681,922.80 = 7,415,767.20 : x - Step 2: Convert to fraction form
12,454,615.20/18,681,922.80 = 7,415,767.20/x - Step 3: Cross multiply
12,454,615.20x = 18,681,922.80 × 7,415,767.20 - Step 4: Simplify right side
12,454,615.20x = 138,540,790,333,172.17 - Step 5: Solve for x
x = 138,540,790,333,172.17/12,454,615.20 - Step 6: Final answer
x = 11,123,650.80
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Similar ratio
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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.