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Finding the Third Proportional to 20,393 and 31,518

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Solution

The third proportional to 20,393 and 31,518 is: 48,712.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,393 : 31,518 = 31,518 : x
  2. Step 2: Convert to fraction form
    20,393/31,518 = 31,518/x
  3. Step 3: Cross multiply
    20,393x = 31,518 × 31,518
  4. Step 4: Simplify right side
    20,393x = 993,384,324
  5. Step 5: Solve for x
    x = 993,384,324/20,393
  6. Step 6: Final answer
    x = 48,712.02

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Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.