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Finding the Third Proportional to 18,748 and 39,220

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Solution

The third proportional to 18,748 and 39,220 is: 82,046.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,748 : 39,220 = 39,220 : x
  2. Step 2: Convert to fraction form
    18,748/39,220 = 39,220/x
  3. Step 3: Cross multiply
    18,748x = 39,220 × 39,220
  4. Step 4: Simplify right side
    18,748x = 1,538,208,400
  5. Step 5: Solve for x
    x = 1,538,208,400/18,748
  6. Step 6: Final answer
    x = 82,046.53

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Why These Related Problems?

These problems maintain the same ratio (2.09) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.