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Finding the Third Proportional to 13,718 and 20,212

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Solution

The third proportional to 13,718 and 20,212 is: 29,780.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,718 : 20,212 = 20,212 : x
  2. Step 2: Convert to fraction form
    13,718/20,212 = 20,212/x
  3. Step 3: Cross multiply
    13,718x = 20,212 × 20,212
  4. Step 4: Simplify right side
    13,718x = 408,524,944
  5. Step 5: Solve for x
    x = 408,524,944/13,718
  6. Step 6: Final answer
    x = 29,780.21

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Why These Related Problems?

These problems maintain the same ratio (1.47) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.