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Finding the Third Proportional to 20,616 and 27,996

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Solution

The third proportional to 20,616 and 27,996 is: 38,017.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,616 : 27,996 = 27,996 : x
  2. Step 2: Convert to fraction form
    20,616/27,996 = 27,996/x
  3. Step 3: Cross multiply
    20,616x = 27,996 × 27,996
  4. Step 4: Simplify right side
    20,616x = 783,776,016
  5. Step 5: Solve for x
    x = 783,776,016/20,616
  6. Step 6: Final answer
    x = 38,017.85

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Why These Related Problems?

These problems maintain the same ratio (1.36) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.