Finding the Fourth Proportional to 12,918,877.20, 19,420,306.20 and 9,158,403.60
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Solution
The fourth proportional to 12,918,877.20, 19,420,306.20 and 9,158,403.60 is: 13,767,373.08
Step by Step Solution
- Step 1: Write the proportion equation
12,918,877.20 : 19,420,306.20 = 9,158,403.60 : x - Step 2: Convert to fraction form
12,918,877.20/19,420,306.20 = 9,158,403.60/x - Step 3: Cross multiply
12,918,877.20x = 19,420,306.20 × 9,158,403.60 - Step 4: Simplify right side
12,918,877.20x = 177,859,002,215,182.31 - Step 5: Solve for x
x = 177,859,002,215,182.31/12,918,877.20 - Step 6: Final answer
x = 13,767,373.08
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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.