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Finding the Third Proportional to 10,917 and 13,347

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Solution

The third proportional to 10,917 and 13,347 is: 16,317.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,917 : 13,347 = 13,347 : x
  2. Step 2: Convert to fraction form
    10,917/13,347 = 13,347/x
  3. Step 3: Cross multiply
    10,917x = 13,347 × 13,347
  4. Step 4: Simplify right side
    10,917x = 178,142,409
  5. Step 5: Solve for x
    x = 178,142,409/10,917
  6. Step 6: Final answer
    x = 16,317.89

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Why These Related Problems?

These problems maintain the same ratio (1.22) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.