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Finding the Third Proportional to 16,992 and 18,336

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Solution

The third proportional to 16,992 and 18,336 is: 19,786.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,992 : 18,336 = 18,336 : x
  2. Step 2: Convert to fraction form
    16,992/18,336 = 18,336/x
  3. Step 3: Cross multiply
    16,992x = 18,336 × 18,336
  4. Step 4: Simplify right side
    16,992x = 336,208,896
  5. Step 5: Solve for x
    x = 336,208,896/16,992
  6. Step 6: Final answer
    x = 19,786.31

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Why These Related Problems?

These problems maintain the same ratio (1.08) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.