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Finding the Third Proportional to 12,279.13 and 18,771.19

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Solution

The third proportional to 12,279.13 and 18,771.19 is: 28,695.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,279.13 : 18,771.19 = 18,771.19 : x
  2. Step 2: Convert to fraction form
    12,279.13/18,771.19 = 18,771.19/x
  3. Step 3: Cross multiply
    12,279.13x = 18,771.19 × 18,771.19
  4. Step 4: Simplify right side
    12,279.13x = 352,357,480.16
  5. Step 5: Solve for x
    x = 352,357,480.16/12,279.13
  6. Step 6: Final answer
    x = 28,695.65

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Why These Related Problems?

These problems maintain the same ratio (1.53) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.