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Finding the Third Proportional to 21,993 and 29,505

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Solution

The third proportional to 21,993 and 29,505 is: 39,582.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,993 : 29,505 = 29,505 : x
  2. Step 2: Convert to fraction form
    21,993/29,505 = 29,505/x
  3. Step 3: Cross multiply
    21,993x = 29,505 × 29,505
  4. Step 4: Simplify right side
    21,993x = 870,545,025
  5. Step 5: Solve for x
    x = 870,545,025/21,993
  6. Step 6: Final answer
    x = 39,582.82

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Why These Related Problems?

These problems maintain the same ratio (1.34) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.