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Finding the Third Proportional to 12,873 and 20,400

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Solution

The third proportional to 12,873 and 20,400 is: 32,328.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,873 : 20,400 = 20,400 : x
  2. Step 2: Convert to fraction form
    12,873/20,400 = 20,400/x
  3. Step 3: Cross multiply
    12,873x = 20,400 × 20,400
  4. Step 4: Simplify right side
    12,873x = 416,160,000
  5. Step 5: Solve for x
    x = 416,160,000/12,873
  6. Step 6: Final answer
    x = 32,328.13

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Why These Related Problems?

These problems maintain the same ratio (1.58) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.