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Finding the Fourth Proportional to 27,174.39, 40,731.66 and 20,489.45

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Solution

The fourth proportional to 27,174.39, 40,731.66 and 20,489.45 is: 30,711.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,174.39 : 40,731.66 = 20,489.45 : x
  2. Step 2: Convert to fraction form
    27,174.39/40,731.66 = 20,489.45/x
  3. Step 3: Cross multiply
    27,174.39x = 40,731.66 × 20,489.45
  4. Step 4: Simplify right side
    27,174.39x = 834,569,107.33
  5. Step 5: Solve for x
    x = 834,569,107.33/27,174.39
  6. Step 6: Final answer
    x = 30,711.61

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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.