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Finding the Third Proportional to 12,750 and 28,021

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Solution

The third proportional to 12,750 and 28,021 is: 61,582.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,750 : 28,021 = 28,021 : x
  2. Step 2: Convert to fraction form
    12,750/28,021 = 28,021/x
  3. Step 3: Cross multiply
    12,750x = 28,021 × 28,021
  4. Step 4: Simplify right side
    12,750x = 785,176,441
  5. Step 5: Solve for x
    x = 785,176,441/12,750
  6. Step 6: Final answer
    x = 61,582.47

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Why These Related Problems?

These problems maintain the same ratio (2.20) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.