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Finding the Third Proportional to 18,533 and 39,881

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Solution

The third proportional to 18,533 and 39,881 is: 85,819.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,533 : 39,881 = 39,881 : x
  2. Step 2: Convert to fraction form
    18,533/39,881 = 39,881/x
  3. Step 3: Cross multiply
    18,533x = 39,881 × 39,881
  4. Step 4: Simplify right side
    18,533x = 1,590,494,161
  5. Step 5: Solve for x
    x = 1,590,494,161/18,533
  6. Step 6: Final answer
    x = 85,819.57

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Why These Related Problems?

These problems maintain the same ratio (2.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.