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Finding the Third Proportional to 13,236 and 20,286

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Solution

The third proportional to 13,236 and 20,286 is: 31,091.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,236 : 20,286 = 20,286 : x
  2. Step 2: Convert to fraction form
    13,236/20,286 = 20,286/x
  3. Step 3: Cross multiply
    13,236x = 20,286 × 20,286
  4. Step 4: Simplify right side
    13,236x = 411,521,796
  5. Step 5: Solve for x
    x = 411,521,796/13,236
  6. Step 6: Final answer
    x = 31,091.10

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Why These Related Problems?

These problems maintain the same ratio (1.53) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.