Home / 12,257.21-18,382.39-4,358.72

Finding the Fourth Proportional to 12,257.21, 18,382.39 and 4,358.72

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Solution

The fourth proportional to 12,257.21, 18,382.39 and 4,358.72 is: 6,536.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,257.21 : 18,382.39 = 4,358.72 : x
  2. Step 2: Convert to fraction form
    12,257.21/18,382.39 = 4,358.72/x
  3. Step 3: Cross multiply
    12,257.21x = 18,382.39 × 4,358.72
  4. Step 4: Simplify right side
    12,257.21x = 80,123,690.94
  5. Step 5: Solve for x
    x = 80,123,690.94/12,257.21
  6. Step 6: Final answer
    x = 6,536.86

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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.