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Finding the Third Proportional to 18,698 and 39,704

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Solution

The third proportional to 18,698 and 39,704 is: 84,308.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,698 : 39,704 = 39,704 : x
  2. Step 2: Convert to fraction form
    18,698/39,704 = 39,704/x
  3. Step 3: Cross multiply
    18,698x = 39,704 × 39,704
  4. Step 4: Simplify right side
    18,698x = 1,576,407,616
  5. Step 5: Solve for x
    x = 1,576,407,616/18,698
  6. Step 6: Final answer
    x = 84,308.89

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Why These Related Problems?

These problems maintain the same ratio (2.12) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.