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Finding the Third Proportional to 18,801.75 and 39,153

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Solution

The third proportional to 18,801.75 and 39,153 is: 81,532.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,801.75 : 39,153 = 39,153 : x
  2. Step 2: Convert to fraction form
    18,801.75/39,153 = 39,153/x
  3. Step 3: Cross multiply
    18,801.75x = 39,153 × 39,153
  4. Step 4: Simplify right side
    18,801.75x = 1,532,957,409
  5. Step 5: Solve for x
    x = 1,532,957,409/18,801.75
  6. Step 6: Final answer
    x = 81,532.70

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Why These Related Problems?

These problems maintain the same ratio (2.08) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.