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Finding the Third Proportional to 13,482 and 20,989

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Solution

The third proportional to 13,482 and 20,989 is: 32,676.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,482 : 20,989 = 20,989 : x
  2. Step 2: Convert to fraction form
    13,482/20,989 = 20,989/x
  3. Step 3: Cross multiply
    13,482x = 20,989 × 20,989
  4. Step 4: Simplify right side
    13,482x = 440,538,121
  5. Step 5: Solve for x
    x = 440,538,121/13,482
  6. Step 6: Final answer
    x = 32,676.02

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Why These Related Problems?

These problems maintain the same ratio (1.56) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.