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Finding the Fourth Proportional to 18,572.42, 27,865.91 and 8,176.88

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Solution

The fourth proportional to 18,572.42, 27,865.91 and 8,176.88 is: 12,268.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,572.42 : 27,865.91 = 8,176.88 : x
  2. Step 2: Convert to fraction form
    18,572.42/27,865.91 = 8,176.88/x
  3. Step 3: Cross multiply
    18,572.42x = 27,865.91 × 8,176.88
  4. Step 4: Simplify right side
    18,572.42x = 227,856,083.27
  5. Step 5: Solve for x
    x = 227,856,083.27/18,572.42
  6. Step 6: Final answer
    x = 12,268.52

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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.