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Finding the Third Proportional to 6,979.61 and 15,213.60

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Solution

The third proportional to 6,979.61 and 15,213.60 is: 33,161.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,979.61 : 15,213.60 = 15,213.60 : x
  2. Step 2: Convert to fraction form
    6,979.61/15,213.60 = 15,213.60/x
  3. Step 3: Cross multiply
    6,979.61x = 15,213.60 × 15,213.60
  4. Step 4: Simplify right side
    6,979.61x = 231,453,731.93
  5. Step 5: Solve for x
    x = 231,453,731.93/6,979.61
  6. Step 6: Final answer
    x = 33,161.43

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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.