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Finding the Third Proportional to 12,719.25 and 18,697.85

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Solution

The third proportional to 12,719.25 and 18,697.85 is: 27,486.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,719.25 : 18,697.85 = 18,697.85 : x
  2. Step 2: Convert to fraction form
    12,719.25/18,697.85 = 18,697.85/x
  3. Step 3: Cross multiply
    12,719.25x = 18,697.85 × 18,697.85
  4. Step 4: Simplify right side
    12,719.25x = 349,609,653.05
  5. Step 5: Solve for x
    x = 349,609,653.05/12,719.25
  6. Step 6: Final answer
    x = 27,486.66

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Why These Related Problems?

These problems maintain the same ratio (1.47) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.