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Finding the Fourth Proportional to 22,221.38, 30,673.23 and 12,793.70

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Solution

The fourth proportional to 22,221.38, 30,673.23 and 12,793.70 is: 17,659.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,221.38 : 30,673.23 = 12,793.70 : x
  2. Step 2: Convert to fraction form
    22,221.38/30,673.23 = 12,793.70/x
  3. Step 3: Cross multiply
    22,221.38x = 30,673.23 × 12,793.70
  4. Step 4: Simplify right side
    22,221.38x = 392,424,131.36
  5. Step 5: Solve for x
    x = 392,424,131.36/22,221.38
  6. Step 6: Final answer
    x = 17,659.75

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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.