Home / 11,891.20-16,408.36-6,854.80

Finding the Fourth Proportional to 11,891.20, 16,408.36 and 6,854.80

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Solution

The fourth proportional to 11,891.20, 16,408.36 and 6,854.80 is: 9,458.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,891.20 : 16,408.36 = 6,854.80 : x
  2. Step 2: Convert to fraction form
    11,891.20/16,408.36 = 6,854.80/x
  3. Step 3: Cross multiply
    11,891.20x = 16,408.36 × 6,854.80
  4. Step 4: Simplify right side
    11,891.20x = 112,476,026.13
  5. Step 5: Solve for x
    x = 112,476,026.13/11,891.20
  6. Step 6: Final answer
    x = 9,458.76

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.