Finding the Fourth Proportional to 20,712,233.76, 28,595,143.18 and 18,414,046.68
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Solution
The fourth proportional to 20,712,233.76, 28,595,143.18 and 18,414,046.68 is: 25,422,284.60
Step by Step Solution
- Step 1: Write the proportion equation
20,712,233.76 : 28,595,143.18 = 18,414,046.68 : x - Step 2: Convert to fraction form
20,712,233.76/28,595,143.18 = 18,414,046.68/x - Step 3: Cross multiply
20,712,233.76x = 28,595,143.18 × 18,414,046.68 - Step 4: Simplify right side
20,712,233.76x = 526,552,301,337,803.62 - Step 5: Solve for x
x = 526,552,301,337,803.62/20,712,233.76 - Step 6: Final answer
x = 25,422,284.60
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.