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Finding the Third Proportional to 8,702 and 13,257

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Solution

The third proportional to 8,702 and 13,257 is: 20,196.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,702 : 13,257 = 13,257 : x
  2. Step 2: Convert to fraction form
    8,702/13,257 = 13,257/x
  3. Step 3: Cross multiply
    8,702x = 13,257 × 13,257
  4. Step 4: Simplify right side
    8,702x = 175,748,049
  5. Step 5: Solve for x
    x = 175,748,049/8,702
  6. Step 6: Final answer
    x = 20,196.28

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Why These Related Problems?

These problems maintain the same ratio (1.52) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.