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Finding the Third Proportional to 16,904 and 18,416

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Solution

The third proportional to 16,904 and 18,416 is: 20,063.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,904 : 18,416 = 18,416 : x
  2. Step 2: Convert to fraction form
    16,904/18,416 = 18,416/x
  3. Step 3: Cross multiply
    16,904x = 18,416 × 18,416
  4. Step 4: Simplify right side
    16,904x = 339,149,056
  5. Step 5: Solve for x
    x = 339,149,056/16,904
  6. Step 6: Final answer
    x = 20,063.24

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Why These Related Problems?

These problems maintain the same ratio (1.09) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.