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Finding the Third Proportional to 18,940 and 28,214

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Solution

The third proportional to 18,940 and 28,214 is: 42,029.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,940 : 28,214 = 28,214 : x
  2. Step 2: Convert to fraction form
    18,940/28,214 = 28,214/x
  3. Step 3: Cross multiply
    18,940x = 28,214 × 28,214
  4. Step 4: Simplify right side
    18,940x = 796,029,796
  5. Step 5: Solve for x
    x = 796,029,796/18,940
  6. Step 6: Final answer
    x = 42,029.03

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.