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Finding the Third Proportional to 12,615.75 and 13,861.13

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Solution

The third proportional to 12,615.75 and 13,861.13 is: 15,229.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,615.75 : 13,861.13 = 13,861.13 : x
  2. Step 2: Convert to fraction form
    12,615.75/13,861.13 = 13,861.13/x
  3. Step 3: Cross multiply
    12,615.75x = 13,861.13 × 13,861.13
  4. Step 4: Simplify right side
    12,615.75x = 192,130,786.27
  5. Step 5: Solve for x
    x = 192,130,786.27/12,615.75
  6. Step 6: Final answer
    x = 15,229.44

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Why These Related Problems?

These problems maintain the same ratio (1.10) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.