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Finding the Third Proportional to 12,740.50 and 18,719

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Solution

The third proportional to 12,740.50 and 18,719 is: 27,502.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,740.50 : 18,719 = 18,719 : x
  2. Step 2: Convert to fraction form
    12,740.50/18,719 = 18,719/x
  3. Step 3: Cross multiply
    12,740.50x = 18,719 × 18,719
  4. Step 4: Simplify right side
    12,740.50x = 350,400,961
  5. Step 5: Solve for x
    x = 350,400,961/12,740.50
  6. Step 6: Final answer
    x = 27,502.92

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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.