Home / 11,820.20-17,724.66-6,891.26

Finding the Fourth Proportional to 11,820.20, 17,724.66 and 6,891.26

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Solution

The fourth proportional to 11,820.20, 17,724.66 and 6,891.26 is: 10,333.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,820.20 : 17,724.66 = 6,891.26 : x
  2. Step 2: Convert to fraction form
    11,820.20/17,724.66 = 6,891.26/x
  3. Step 3: Cross multiply
    11,820.20x = 17,724.66 × 6,891.26
  4. Step 4: Simplify right side
    11,820.20x = 122,145,240.47
  5. Step 5: Solve for x
    x = 122,145,240.47/11,820.20
  6. Step 6: Final answer
    x = 10,333.60

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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.