Home / 11,979.62-17,977.43-4,188.43

Finding the Fourth Proportional to 11,979.62, 17,977.43 and 4,188.43

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Solution

The fourth proportional to 11,979.62, 17,977.43 and 4,188.43 is: 6,285.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,979.62 : 17,977.43 = 4,188.43 : x
  2. Step 2: Convert to fraction form
    11,979.62/17,977.43 = 4,188.43/x
  3. Step 3: Cross multiply
    11,979.62x = 17,977.43 × 4,188.43
  4. Step 4: Simplify right side
    11,979.62x = 75,297,207.13
  5. Step 5: Solve for x
    x = 75,297,207.13/11,979.62
  6. Step 6: Final answer
    x = 6,285.44

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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.