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Finding the Third Proportional to 21,939 and 29,793

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Solution

The third proportional to 21,939 and 29,793 is: 40,458.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,939 : 29,793 = 29,793 : x
  2. Step 2: Convert to fraction form
    21,939/29,793 = 29,793/x
  3. Step 3: Cross multiply
    21,939x = 29,793 × 29,793
  4. Step 4: Simplify right side
    21,939x = 887,622,849
  5. Step 5: Solve for x
    x = 887,622,849/21,939
  6. Step 6: Final answer
    x = 40,458.67

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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.