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Finding the Third Proportional to 11,408 and 13,904

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Solution

The third proportional to 11,408 and 13,904 is: 16,946.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,408 : 13,904 = 13,904 : x
  2. Step 2: Convert to fraction form
    11,408/13,904 = 13,904/x
  3. Step 3: Cross multiply
    11,408x = 13,904 × 13,904
  4. Step 4: Simplify right side
    11,408x = 193,321,216
  5. Step 5: Solve for x
    x = 193,321,216/11,408
  6. Step 6: Final answer
    x = 16,946.11

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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.