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Finding the Third Proportional to 20,136 and 28,745

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Solution

The third proportional to 20,136 and 28,745 is: 41,034.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,136 : 28,745 = 28,745 : x
  2. Step 2: Convert to fraction form
    20,136/28,745 = 28,745/x
  3. Step 3: Cross multiply
    20,136x = 28,745 × 28,745
  4. Step 4: Simplify right side
    20,136x = 826,275,025
  5. Step 5: Solve for x
    x = 826,275,025/20,136
  6. Step 6: Final answer
    x = 41,034.72

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Why These Related Problems?

These problems maintain the same ratio (1.43) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.