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Finding the Third Proportional to 12,579 and 27,090

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Solution

The third proportional to 12,579 and 27,090 is: 58,340.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,579 : 27,090 = 27,090 : x
  2. Step 2: Convert to fraction form
    12,579/27,090 = 27,090/x
  3. Step 3: Cross multiply
    12,579x = 27,090 × 27,090
  4. Step 4: Simplify right side
    12,579x = 733,868,100
  5. Step 5: Solve for x
    x = 733,868,100/12,579
  6. Step 6: Final answer
    x = 58,340.73

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Why These Related Problems?

These problems maintain the same ratio (2.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.