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Finding the Third Proportional to 11,403 and 18,103

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Solution

The third proportional to 11,403 and 18,103 is: 28,739.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,403 : 18,103 = 18,103 : x
  2. Step 2: Convert to fraction form
    11,403/18,103 = 18,103/x
  3. Step 3: Cross multiply
    11,403x = 18,103 × 18,103
  4. Step 4: Simplify right side
    11,403x = 327,718,609
  5. Step 5: Solve for x
    x = 327,718,609/11,403
  6. Step 6: Final answer
    x = 28,739.68

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Why These Related Problems?

These problems maintain the same ratio (1.59) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.