Home / 11,921.20-17,859.99-5,584.44

Finding the Fourth Proportional to 11,921.20, 17,859.99 and 5,584.44

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Solution

The fourth proportional to 11,921.20, 17,859.99 and 5,584.44 is: 8,366.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,921.20 : 17,859.99 = 5,584.44 : x
  2. Step 2: Convert to fraction form
    11,921.20/17,859.99 = 5,584.44/x
  3. Step 3: Cross multiply
    11,921.20x = 17,859.99 × 5,584.44
  4. Step 4: Simplify right side
    11,921.20x = 99,738,042.56
  5. Step 5: Solve for x
    x = 99,738,042.56/11,921.20
  6. Step 6: Final answer
    x = 8,366.44

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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.