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Finding the Third Proportional to 13,659 and 20,885.25

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Solution

The third proportional to 13,659 and 20,885.25 is: 31,934.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,659 : 20,885.25 = 20,885.25 : x
  2. Step 2: Convert to fraction form
    13,659/20,885.25 = 20,885.25/x
  3. Step 3: Cross multiply
    13,659x = 20,885.25 × 20,885.25
  4. Step 4: Simplify right side
    13,659x = 436,193,667.56
  5. Step 5: Solve for x
    x = 436,193,667.56/13,659
  6. Step 6: Final answer
    x = 31,934.52

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Why These Related Problems?

These problems maintain the same ratio (1.53) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.