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Finding the Third Proportional to 8,759.39 and 18,661.64

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Solution

The third proportional to 8,759.39 and 18,661.64 is: 39,758.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,759.39 : 18,661.64 = 18,661.64 : x
  2. Step 2: Convert to fraction form
    8,759.39/18,661.64 = 18,661.64/x
  3. Step 3: Cross multiply
    8,759.39x = 18,661.64 × 18,661.64
  4. Step 4: Simplify right side
    8,759.39x = 348,256,830.82
  5. Step 5: Solve for x
    x = 348,256,830.82/8,759.39
  6. Step 6: Final answer
    x = 39,758.11

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Why These Related Problems?

These problems maintain the same ratio (2.13) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.