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Finding the Third Proportional to 21,906 and 34,029

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Solution

The third proportional to 21,906 and 34,029 is: 52,860.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,906 : 34,029 = 34,029 : x
  2. Step 2: Convert to fraction form
    21,906/34,029 = 34,029/x
  3. Step 3: Cross multiply
    21,906x = 34,029 × 34,029
  4. Step 4: Simplify right side
    21,906x = 1,157,972,841
  5. Step 5: Solve for x
    x = 1,157,972,841/21,906
  6. Step 6: Final answer
    x = 52,860.99

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Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.