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Finding the Third Proportional to 21,006 and 27,600.75

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Solution

The third proportional to 21,006 and 27,600.75 is: 36,265.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,006 : 27,600.75 = 27,600.75 : x
  2. Step 2: Convert to fraction form
    21,006/27,600.75 = 27,600.75/x
  3. Step 3: Cross multiply
    21,006x = 27,600.75 × 27,600.75
  4. Step 4: Simplify right side
    21,006x = 761,801,400.56
  5. Step 5: Solve for x
    x = 761,801,400.56/21,006
  6. Step 6: Final answer
    x = 36,265.90

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Why These Related Problems?

These problems maintain the same ratio (1.31) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.