Home / 12,165.26-18,247.88-5,239.76

Finding the Fourth Proportional to 12,165.26, 18,247.88 and 5,239.76

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Solution

The fourth proportional to 12,165.26, 18,247.88 and 5,239.76 is: 7,859.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,165.26 : 18,247.88 = 5,239.76 : x
  2. Step 2: Convert to fraction form
    12,165.26/18,247.88 = 5,239.76/x
  3. Step 3: Cross multiply
    12,165.26x = 18,247.88 × 5,239.76
  4. Step 4: Simplify right side
    12,165.26x = 95,614,433.57
  5. Step 5: Solve for x
    x = 95,614,433.57/12,165.26
  6. Step 6: Final answer
    x = 7,859.63

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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.