Finding the Fourth Proportional to 12,387,843.40, 18,581,765.10 and 3,291,344.95
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Solution
The fourth proportional to 12,387,843.40, 18,581,765.10 and 3,291,344.95 is: 4,937,017.43
Step by Step Solution
- Step 1: Write the proportion equation
12,387,843.40 : 18,581,765.10 = 3,291,344.95 : x - Step 2: Convert to fraction form
12,387,843.40/18,581,765.10 = 3,291,344.95/x - Step 3: Cross multiply
12,387,843.40x = 18,581,765.10 × 3,291,344.95 - Step 4: Simplify right side
12,387,843.40x = 61,158,998,723,971.25 - Step 5: Solve for x
x = 61,158,998,723,971.25/12,387,843.40 - Step 6: Final answer
x = 4,937,017.43
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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.