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Finding the Third Proportional to 8,489,815.88 and 13,239,175.78

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Solution

The third proportional to 8,489,815.88 and 13,239,175.78 is: 20,645,415.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,489,815.88 : 13,239,175.78 = 13,239,175.78 : x
  2. Step 2: Convert to fraction form
    8,489,815.88/13,239,175.78 = 13,239,175.78/x
  3. Step 3: Cross multiply
    8,489,815.88x = 13,239,175.78 × 13,239,175.78
  4. Step 4: Simplify right side
    8,489,815.88x = 175,275,775,366,836.56
  5. Step 5: Solve for x
    x = 175,275,775,366,836.56/8,489,815.88
  6. Step 6: Final answer
    x = 20,645,415.40

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Why These Related Problems?

These problems maintain the same ratio (1.56) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.