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Finding the Fourth Proportional to 18,542.72, 27,797.78 and 9,639.30

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Solution

The fourth proportional to 18,542.72, 27,797.78 and 9,639.30 is: 14,450.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,542.72 : 27,797.78 = 9,639.30 : x
  2. Step 2: Convert to fraction form
    18,542.72/27,797.78 = 9,639.30/x
  3. Step 3: Cross multiply
    18,542.72x = 27,797.78 × 9,639.30
  4. Step 4: Simplify right side
    18,542.72x = 267,951,140.75
  5. Step 5: Solve for x
    x = 267,951,140.75/18,542.72
  6. Step 6: Final answer
    x = 14,450.48

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1.5x scale

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.