Home / 11,785.20-16,261.80-6,747.60

Finding the Fourth Proportional to 11,785.20, 16,261.80 and 6,747.60

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Solution

The fourth proportional to 11,785.20, 16,261.80 and 6,747.60 is: 9,310.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,785.20 : 16,261.80 = 6,747.60 : x
  2. Step 2: Convert to fraction form
    11,785.20/16,261.80 = 6,747.60/x
  3. Step 3: Cross multiply
    11,785.20x = 16,261.80 × 6,747.60
  4. Step 4: Simplify right side
    11,785.20x = 109,728,121.68
  5. Step 5: Solve for x
    x = 109,728,121.68/11,785.20
  6. Step 6: Final answer
    x = 9,310.67

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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.