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Finding the Third Proportional to 20,433 and 28,137

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Solution

The third proportional to 20,433 and 28,137 is: 38,745.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,433 : 28,137 = 28,137 : x
  2. Step 2: Convert to fraction form
    20,433/28,137 = 28,137/x
  3. Step 3: Cross multiply
    20,433x = 28,137 × 28,137
  4. Step 4: Simplify right side
    20,433x = 791,690,769
  5. Step 5: Solve for x
    x = 791,690,769/20,433
  6. Step 6: Final answer
    x = 38,745.69

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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.