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Finding the Third Proportional to 17,682 and 19,338

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Solution

The third proportional to 17,682 and 19,338 is: 21,149.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,682 : 19,338 = 19,338 : x
  2. Step 2: Convert to fraction form
    17,682/19,338 = 19,338/x
  3. Step 3: Cross multiply
    17,682x = 19,338 × 19,338
  4. Step 4: Simplify right side
    17,682x = 373,958,244
  5. Step 5: Solve for x
    x = 373,958,244/17,682
  6. Step 6: Final answer
    x = 21,149.09

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Why These Related Problems?

These problems maintain the same ratio (1.09) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.