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Finding the Third Proportional to 8,992 and 13,408

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Solution

The third proportional to 8,992 and 13,408 is: 19,992.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,992 : 13,408 = 13,408 : x
  2. Step 2: Convert to fraction form
    8,992/13,408 = 13,408/x
  3. Step 3: Cross multiply
    8,992x = 13,408 × 13,408
  4. Step 4: Simplify right side
    8,992x = 179,774,464
  5. Step 5: Solve for x
    x = 179,774,464/8,992
  6. Step 6: Final answer
    x = 19,992.71

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.