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Finding the Third Proportional to 18,904 and 31,383

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Solution

The third proportional to 18,904 and 31,383 is: 52,099.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,904 : 31,383 = 31,383 : x
  2. Step 2: Convert to fraction form
    18,904/31,383 = 31,383/x
  3. Step 3: Cross multiply
    18,904x = 31,383 × 31,383
  4. Step 4: Simplify right side
    18,904x = 984,892,689
  5. Step 5: Solve for x
    x = 984,892,689/18,904
  6. Step 6: Final answer
    x = 52,099.70

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Why These Related Problems?

These problems maintain the same ratio (1.66) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.