Home / 12,787,103.59-19,192,781.65-7,914,671.42

Finding the Fourth Proportional to 12,787,103.59, 19,192,781.65 and 7,914,671.42

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Solution

The fourth proportional to 12,787,103.59, 19,192,781.65 and 7,914,671.42 is: 11,879,512.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,787,103.59 : 19,192,781.65 = 7,914,671.42 : x
  2. Step 2: Convert to fraction form
    12,787,103.59/19,192,781.65 = 7,914,671.42/x
  3. Step 3: Cross multiply
    12,787,103.59x = 19,192,781.65 × 7,914,671.42
  4. Step 4: Simplify right side
    12,787,103.59x = 151,904,560,407,333.28
  5. Step 5: Solve for x
    x = 151,904,560,407,333.28/12,787,103.59
  6. Step 6: Final answer
    x = 11,879,512.77

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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.