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Finding the Fourth Proportional to 20,250.59, 27,948.89 and 12,291.27

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Solution

The fourth proportional to 20,250.59, 27,948.89 and 12,291.27 is: 16,963.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,250.59 : 27,948.89 = 12,291.27 : x
  2. Step 2: Convert to fraction form
    20,250.59/27,948.89 = 12,291.27/x
  3. Step 3: Cross multiply
    20,250.59x = 27,948.89 × 12,291.27
  4. Step 4: Simplify right side
    20,250.59x = 343,527,353.19
  5. Step 5: Solve for x
    x = 343,527,353.19/20,250.59
  6. Step 6: Final answer
    x = 16,963.82

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1.5x scale

Why These Related Problems?

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