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Finding the Third Proportional to 10,912 and 13,288

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Solution

The third proportional to 10,912 and 13,288 is: 16,181.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,912 : 13,288 = 13,288 : x
  2. Step 2: Convert to fraction form
    10,912/13,288 = 13,288/x
  3. Step 3: Cross multiply
    10,912x = 13,288 × 13,288
  4. Step 4: Simplify right side
    10,912x = 176,570,944
  5. Step 5: Solve for x
    x = 176,570,944/10,912
  6. Step 6: Final answer
    x = 16,181.35

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Why These Related Problems?

These problems maintain the same ratio (1.22) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.