Home / 10,865.56-16,286.94-5,311.24

Finding the Fourth Proportional to 10,865.56, 16,286.94 and 5,311.24

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Solution

The fourth proportional to 10,865.56, 16,286.94 and 5,311.24 is: 7,961.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,865.56 : 16,286.94 = 5,311.24 : x
  2. Step 2: Convert to fraction form
    10,865.56/16,286.94 = 5,311.24/x
  3. Step 3: Cross multiply
    10,865.56x = 16,286.94 × 5,311.24
  4. Step 4: Simplify right side
    10,865.56x = 86,503,847.21
  5. Step 5: Solve for x
    x = 86,503,847.21/10,865.56
  6. Step 6: Final answer
    x = 7,961.29

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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.