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Finding the Fourth Proportional to 22,123.44, 30,530.52 and 12,691.44

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Solution

The fourth proportional to 22,123.44, 30,530.52 and 12,691.44 is: 17,514.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,123.44 : 30,530.52 = 12,691.44 : x
  2. Step 2: Convert to fraction form
    22,123.44/30,530.52 = 12,691.44/x
  3. Step 3: Cross multiply
    22,123.44x = 30,530.52 × 12,691.44
  4. Step 4: Simplify right side
    22,123.44x = 387,476,262.75
  5. Step 5: Solve for x
    x = 387,476,262.75/22,123.44
  6. Step 6: Final answer
    x = 17,514.29

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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.