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Finding the Third Proportional to 20,405.38 and 29,909.44

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Solution

The third proportional to 20,405.38 and 29,909.44 is: 43,840.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,405.38 : 29,909.44 = 29,909.44 : x
  2. Step 2: Convert to fraction form
    20,405.38/29,909.44 = 29,909.44/x
  3. Step 3: Cross multiply
    20,405.38x = 29,909.44 × 29,909.44
  4. Step 4: Simplify right side
    20,405.38x = 894,574,451.57
  5. Step 5: Solve for x
    x = 894,574,451.57/20,405.38
  6. Step 6: Final answer
    x = 43,840.14

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Why These Related Problems?

These problems maintain the same ratio (1.47) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.