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Finding the Third Proportional to 15,320 and 16,904

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Solution

The third proportional to 15,320 and 16,904 is: 18,651.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,320 : 16,904 = 16,904 : x
  2. Step 2: Convert to fraction form
    15,320/16,904 = 16,904/x
  3. Step 3: Cross multiply
    15,320x = 16,904 × 16,904
  4. Step 4: Simplify right side
    15,320x = 285,745,216
  5. Step 5: Solve for x
    x = 285,745,216/15,320
  6. Step 6: Final answer
    x = 18,651.78

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Why These Related Problems?

These problems maintain the same ratio (1.10) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.