Home / 11,976.91-17,965.47-4,185.74

Finding the Fourth Proportional to 11,976.91, 17,965.47 and 4,185.74

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Solution

The fourth proportional to 11,976.91, 17,965.47 and 4,185.74 is: 6,278.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,976.91 : 17,965.47 = 4,185.74 : x
  2. Step 2: Convert to fraction form
    11,976.91/17,965.47 = 4,185.74/x
  3. Step 3: Cross multiply
    11,976.91x = 17,965.47 × 4,185.74
  4. Step 4: Simplify right side
    11,976.91x = 75,198,786.40
  5. Step 5: Solve for x
    x = 75,198,786.40/11,976.91
  6. Step 6: Final answer
    x = 6,278.65

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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.