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Finding the Fourth Proportional to 18,520.92, 25,557.26 and 10,454.13

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Solution

The fourth proportional to 18,520.92, 25,557.26 and 10,454.13 is: 14,425.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,520.92 : 25,557.26 = 10,454.13 : x
  2. Step 2: Convert to fraction form
    18,520.92/25,557.26 = 10,454.13/x
  3. Step 3: Cross multiply
    18,520.92x = 25,557.26 × 10,454.13
  4. Step 4: Simplify right side
    18,520.92x = 267,178,866.21
  5. Step 5: Solve for x
    x = 267,178,866.21/18,520.92
  6. Step 6: Final answer
    x = 14,425.79

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.