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Finding the Third Proportional to 20,171 and 28,677

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Solution

The third proportional to 20,171 and 28,677 is: 40,769.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,171 : 28,677 = 28,677 : x
  2. Step 2: Convert to fraction form
    20,171/28,677 = 28,677/x
  3. Step 3: Cross multiply
    20,171x = 28,677 × 28,677
  4. Step 4: Simplify right side
    20,171x = 822,370,329
  5. Step 5: Solve for x
    x = 822,370,329/20,171
  6. Step 6: Final answer
    x = 40,769.93

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Why These Related Problems?

These problems maintain the same ratio (1.42) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.