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Finding the Fourth Proportional to 10,671,891.74, 15,998,867.26 and 8,645,109.47

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Solution

The fourth proportional to 10,671,891.74, 15,998,867.26 and 8,645,109.47 is: 12,960,397.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,671,891.74 : 15,998,867.26 = 8,645,109.47 : x
  2. Step 2: Convert to fraction form
    10,671,891.74/15,998,867.26 = 8,645,109.47/x
  3. Step 3: Cross multiply
    10,671,891.74x = 15,998,867.26 × 8,645,109.47
  4. Step 4: Simplify right side
    10,671,891.74x = 138,311,958,858,698.97
  5. Step 5: Solve for x
    x = 138,311,958,858,698.97/10,671,891.74
  6. Step 6: Final answer
    x = 12,960,397.48

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.