Home / 11,789.10-17,679-4,290.87

Finding the Fourth Proportional to 11,789.10, 17,679 and 4,290.87

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Solution

The fourth proportional to 11,789.10, 17,679 and 4,290.87 is: 6,434.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,789.10 : 17,679 = 4,290.87 : x
  2. Step 2: Convert to fraction form
    11,789.10/17,679 = 4,290.87/x
  3. Step 3: Cross multiply
    11,789.10x = 17,679 × 4,290.87
  4. Step 4: Simplify right side
    11,789.10x = 75,858,290.73
  5. Step 5: Solve for x
    x = 75,858,290.73/11,789.10
  6. Step 6: Final answer
    x = 6,434.61

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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.