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Finding the Third Proportional to 13,908 and 16,356

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Solution

The third proportional to 13,908 and 16,356 is: 19,234.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,908 : 16,356 = 16,356 : x
  2. Step 2: Convert to fraction form
    13,908/16,356 = 16,356/x
  3. Step 3: Cross multiply
    13,908x = 16,356 × 16,356
  4. Step 4: Simplify right side
    13,908x = 267,518,736
  5. Step 5: Solve for x
    x = 267,518,736/13,908
  6. Step 6: Final answer
    x = 19,234.88

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Why These Related Problems?

These problems maintain the same ratio (1.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.