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Finding the Third Proportional to 13,824 and 20,992

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Solution

The third proportional to 13,824 and 20,992 is: 31,876.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,824 : 20,992 = 20,992 : x
  2. Step 2: Convert to fraction form
    13,824/20,992 = 20,992/x
  3. Step 3: Cross multiply
    13,824x = 20,992 × 20,992
  4. Step 4: Simplify right side
    13,824x = 440,664,064
  5. Step 5: Solve for x
    x = 440,664,064/13,824
  6. Step 6: Final answer
    x = 31,876.74

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Why These Related Problems?

These problems maintain the same ratio (1.52) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.