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Finding the Third Proportional to 21,922 and 25,628

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Solution

The third proportional to 21,922 and 25,628 is: 29,960.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,922 : 25,628 = 25,628 : x
  2. Step 2: Convert to fraction form
    21,922/25,628 = 25,628/x
  3. Step 3: Cross multiply
    21,922x = 25,628 × 25,628
  4. Step 4: Simplify right side
    21,922x = 656,794,384
  5. Step 5: Solve for x
    x = 656,794,384/21,922
  6. Step 6: Final answer
    x = 29,960.51

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Why These Related Problems?

These problems maintain the same ratio (1.17) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.