Home / 11,910.78-17,866.44-4,518.72

Finding the Fourth Proportional to 11,910.78, 17,866.44 and 4,518.72

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Solution

The fourth proportional to 11,910.78, 17,866.44 and 4,518.72 is: 6,778.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,910.78 : 17,866.44 = 4,518.72 : x
  2. Step 2: Convert to fraction form
    11,910.78/17,866.44 = 4,518.72/x
  3. Step 3: Cross multiply
    11,910.78x = 17,866.44 × 4,518.72
  4. Step 4: Simplify right side
    11,910.78x = 80,733,439.76
  5. Step 5: Solve for x
    x = 80,733,439.76/11,910.78
  6. Step 6: Final answer
    x = 6,778.18

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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.