Home / 18,171.72-27,257.22-5,691.78

Finding the Fourth Proportional to 18,171.72, 27,257.22 and 5,691.78

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Solution

The fourth proportional to 18,171.72, 27,257.22 and 5,691.78 is: 8,537.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,171.72 : 27,257.22 = 5,691.78 : x
  2. Step 2: Convert to fraction form
    18,171.72/27,257.22 = 5,691.78/x
  3. Step 3: Cross multiply
    18,171.72x = 27,257.22 × 5,691.78
  4. Step 4: Simplify right side
    18,171.72x = 155,142,099.65
  5. Step 5: Solve for x
    x = 155,142,099.65/18,171.72
  6. Step 6: Final answer
    x = 8,537.56

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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.