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Finding the Third Proportional to 18,351 and 39,825

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Solution

The third proportional to 18,351 and 39,825 is: 86,427.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,351 : 39,825 = 39,825 : x
  2. Step 2: Convert to fraction form
    18,351/39,825 = 39,825/x
  3. Step 3: Cross multiply
    18,351x = 39,825 × 39,825
  4. Step 4: Simplify right side
    18,351x = 1,586,030,625
  5. Step 5: Solve for x
    x = 1,586,030,625/18,351
  6. Step 6: Final answer
    x = 86,427.48

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Why These Related Problems?

These problems maintain the same ratio (2.17) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.