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Finding the Fourth Proportional to 28,499.43, 42,711.87 and 15,323.43

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Solution

The fourth proportional to 28,499.43, 42,711.87 and 15,323.43 is: 22,965.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,499.43 : 42,711.87 = 15,323.43 : x
  2. Step 2: Convert to fraction form
    28,499.43/42,711.87 = 15,323.43/x
  3. Step 3: Cross multiply
    28,499.43x = 42,711.87 × 15,323.43
  4. Step 4: Simplify right side
    28,499.43x = 654,492,350.11
  5. Step 5: Solve for x
    x = 654,492,350.11/28,499.43
  6. Step 6: Final answer
    x = 22,965.10

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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.