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Finding the Third Proportional to 16,986 and 19,554

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Solution

The third proportional to 16,986 and 19,554 is: 22,510.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,986 : 19,554 = 19,554 : x
  2. Step 2: Convert to fraction form
    16,986/19,554 = 19,554/x
  3. Step 3: Cross multiply
    16,986x = 19,554 × 19,554
  4. Step 4: Simplify right side
    16,986x = 382,358,916
  5. Step 5: Solve for x
    x = 382,358,916/16,986
  6. Step 6: Final answer
    x = 22,510.24

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Why These Related Problems?

These problems maintain the same ratio (1.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.