Home / 20,407,819.41-28,162,789.79-11,240,462.61

Finding the Fourth Proportional to 20,407,819.41, 28,162,789.79 and 11,240,462.61

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Solution

The fourth proportional to 20,407,819.41, 28,162,789.79 and 11,240,462.61 is: 15,511,837.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,407,819.41 : 28,162,789.79 = 11,240,462.61 : x
  2. Step 2: Convert to fraction form
    20,407,819.41/28,162,789.79 = 11,240,462.61/x
  3. Step 3: Cross multiply
    20,407,819.41x = 28,162,789.79 × 11,240,462.61
  4. Step 4: Simplify right side
    20,407,819.41x = 316,562,785,571,582.44
  5. Step 5: Solve for x
    x = 316,562,785,571,582.44/20,407,819.41
  6. Step 6: Final answer
    x = 15,511,837.85

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.