Home / 11,121.88-16,680.90-3,328.60

Finding the Fourth Proportional to 11,121.88, 16,680.90 and 3,328.60

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Solution

The fourth proportional to 11,121.88, 16,680.90 and 3,328.60 is: 4,992.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,121.88 : 16,680.90 = 3,328.60 : x
  2. Step 2: Convert to fraction form
    11,121.88/16,680.90 = 3,328.60/x
  3. Step 3: Cross multiply
    11,121.88x = 16,680.90 × 3,328.60
  4. Step 4: Simplify right side
    11,121.88x = 55,524,043.74
  5. Step 5: Solve for x
    x = 55,524,043.74/11,121.88
  6. Step 6: Final answer
    x = 4,992.33

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1.5x scale

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.