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Finding the Third Proportional to 21,633 and 27,643

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Solution

The third proportional to 21,633 and 27,643 is: 35,322.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,633 : 27,643 = 27,643 : x
  2. Step 2: Convert to fraction form
    21,633/27,643 = 27,643/x
  3. Step 3: Cross multiply
    21,633x = 27,643 × 27,643
  4. Step 4: Simplify right side
    21,633x = 764,135,449
  5. Step 5: Solve for x
    x = 764,135,449/21,633
  6. Step 6: Final answer
    x = 35,322.68

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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.