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Finding the Third Proportional to 16,972 and 19,438

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Solution

The third proportional to 16,972 and 19,438 is: 22,262.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,972 : 19,438 = 19,438 : x
  2. Step 2: Convert to fraction form
    16,972/19,438 = 19,438/x
  3. Step 3: Cross multiply
    16,972x = 19,438 × 19,438
  4. Step 4: Simplify right side
    16,972x = 377,835,844
  5. Step 5: Solve for x
    x = 377,835,844/16,972
  6. Step 6: Final answer
    x = 22,262.31

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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.