Home / 12,213.19-18,311.46-5,635.72

Finding the Fourth Proportional to 12,213.19, 18,311.46 and 5,635.72

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Solution

The fourth proportional to 12,213.19, 18,311.46 and 5,635.72 is: 8,449.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,213.19 : 18,311.46 = 5,635.72 : x
  2. Step 2: Convert to fraction form
    12,213.19/18,311.46 = 5,635.72/x
  3. Step 3: Cross multiply
    12,213.19x = 18,311.46 × 5,635.72
  4. Step 4: Simplify right side
    12,213.19x = 103,198,261.35
  5. Step 5: Solve for x
    x = 103,198,261.35/12,213.19
  6. Step 6: Final answer
    x = 8,449.74

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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.