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Finding the Third Proportional to 6,981.13 and 15,216.75

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Solution

The third proportional to 6,981.13 and 15,216.75 is: 33,167.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,981.13 : 15,216.75 = 15,216.75 : x
  2. Step 2: Convert to fraction form
    6,981.13/15,216.75 = 15,216.75/x
  3. Step 3: Cross multiply
    6,981.13x = 15,216.75 × 15,216.75
  4. Step 4: Simplify right side
    6,981.13x = 231,549,480.56
  5. Step 5: Solve for x
    x = 231,549,480.56/6,981.13
  6. Step 6: Final answer
    x = 33,167.93

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Why These Related Problems?

These problems maintain the same ratio (2.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.