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Finding the Fourth Proportional to 10,572.88, 15,845.32 and 5,631.88

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Solution

The fourth proportional to 10,572.88, 15,845.32 and 5,631.88 is: 8,440.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,572.88 : 15,845.32 = 5,631.88 : x
  2. Step 2: Convert to fraction form
    10,572.88/15,845.32 = 5,631.88/x
  3. Step 3: Cross multiply
    10,572.88x = 15,845.32 × 5,631.88
  4. Step 4: Simplify right side
    10,572.88x = 89,238,940.80
  5. Step 5: Solve for x
    x = 89,238,940.80/10,572.88
  6. Step 6: Final answer
    x = 8,440.36

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.