Home / 8,850.20-13,286.10-8,785.40

Finding the Fourth Proportional to 8,850.20, 13,286.10 and 8,785.40

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Solution

The fourth proportional to 8,850.20, 13,286.10 and 8,785.40 is: 13,188.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,850.20 : 13,286.10 = 8,785.40 : x
  2. Step 2: Convert to fraction form
    8,850.20/13,286.10 = 8,785.40/x
  3. Step 3: Cross multiply
    8,850.20x = 13,286.10 × 8,785.40
  4. Step 4: Simplify right side
    8,850.20x = 116,723,702.94
  5. Step 5: Solve for x
    x = 116,723,702.94/8,850.20
  6. Step 6: Final answer
    x = 13,188.82

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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.