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Finding the Third Proportional to 20,111 and 28,267

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Solution

The third proportional to 20,111 and 28,267 is: 39,730.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,111 : 28,267 = 28,267 : x
  2. Step 2: Convert to fraction form
    20,111/28,267 = 28,267/x
  3. Step 3: Cross multiply
    20,111x = 28,267 × 28,267
  4. Step 4: Simplify right side
    20,111x = 799,023,289
  5. Step 5: Solve for x
    x = 799,023,289/20,111
  6. Step 6: Final answer
    x = 39,730.66

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Why These Related Problems?

These problems maintain the same ratio (1.41) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.