Home / 12,251,712.70-18,377,569.05-7,968,691.90

Finding the Fourth Proportional to 12,251,712.70, 18,377,569.05 and 7,968,691.90

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Solution

The fourth proportional to 12,251,712.70, 18,377,569.05 and 7,968,691.90 is: 11,953,037.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,251,712.70 : 18,377,569.05 = 7,968,691.90 : x
  2. Step 2: Convert to fraction form
    12,251,712.70/18,377,569.05 = 7,968,691.90/x
  3. Step 3: Cross multiply
    12,251,712.70x = 18,377,569.05 × 7,968,691.90
  4. Step 4: Simplify right side
    12,251,712.70x = 146,445,185,630,425.72
  5. Step 5: Solve for x
    x = 146,445,185,630,425.72/12,251,712.70
  6. Step 6: Final answer
    x = 11,953,037.85

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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.