Home / 13,238.12-19,857.18-8,311.22

Finding the Fourth Proportional to 13,238.12, 19,857.18 and 8,311.22

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Solution

The fourth proportional to 13,238.12, 19,857.18 and 8,311.22 is: 12,466.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,238.12 : 19,857.18 = 8,311.22 : x
  2. Step 2: Convert to fraction form
    13,238.12/19,857.18 = 8,311.22/x
  3. Step 3: Cross multiply
    13,238.12x = 19,857.18 × 8,311.22
  4. Step 4: Simplify right side
    13,238.12x = 165,037,391.56
  5. Step 5: Solve for x
    x = 165,037,391.56/13,238.12
  6. Step 6: Final answer
    x = 12,466.83

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Similar ratio
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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.