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Finding the Fourth Proportional to 28,882.30, 43,359.90 and 15,565.90

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Solution

The fourth proportional to 28,882.30, 43,359.90 and 15,565.90 is: 23,368.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,882.30 : 43,359.90 = 15,565.90 : x
  2. Step 2: Convert to fraction form
    28,882.30/43,359.90 = 15,565.90/x
  3. Step 3: Cross multiply
    28,882.30x = 43,359.90 × 15,565.90
  4. Step 4: Simplify right side
    28,882.30x = 674,935,867.41
  5. Step 5: Solve for x
    x = 674,935,867.41/28,882.30
  6. Step 6: Final answer
    x = 23,368.49

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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.