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Finding the Third Proportional to 15,372 and 16,992

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Solution

The third proportional to 15,372 and 16,992 is: 18,782.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,372 : 16,992 = 16,992 : x
  2. Step 2: Convert to fraction form
    15,372/16,992 = 16,992/x
  3. Step 3: Cross multiply
    15,372x = 16,992 × 16,992
  4. Step 4: Simplify right side
    15,372x = 288,728,064
  5. Step 5: Solve for x
    x = 288,728,064/15,372
  6. Step 6: Final answer
    x = 18,782.73

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Why These Related Problems?

These problems maintain the same ratio (1.11) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.