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Finding the Third Proportional to 21,622 and 27,628

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Solution

The third proportional to 21,622 and 27,628 is: 35,302.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,622 : 27,628 = 27,628 : x
  2. Step 2: Convert to fraction form
    21,622/27,628 = 27,628/x
  3. Step 3: Cross multiply
    21,622x = 27,628 × 27,628
  4. Step 4: Simplify right side
    21,622x = 763,306,384
  5. Step 5: Solve for x
    x = 763,306,384/21,622
  6. Step 6: Final answer
    x = 35,302.30

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Why These Related Problems?

These problems maintain the same ratio (1.28) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.