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Finding the Third Proportional to 12,947 and 27,190

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Solution

The third proportional to 12,947 and 27,190 is: 57,101.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,947 : 27,190 = 27,190 : x
  2. Step 2: Convert to fraction form
    12,947/27,190 = 27,190/x
  3. Step 3: Cross multiply
    12,947x = 27,190 × 27,190
  4. Step 4: Simplify right side
    12,947x = 739,296,100
  5. Step 5: Solve for x
    x = 739,296,100/12,947
  6. Step 6: Final answer
    x = 57,101.73

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Why These Related Problems?

These problems maintain the same ratio (2.10) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.