Home / 12,180.72-18,269.46-3,415.44

Finding the Fourth Proportional to 12,180.72, 18,269.46 and 3,415.44

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Solution

The fourth proportional to 12,180.72, 18,269.46 and 3,415.44 is: 5,122.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,180.72 : 18,269.46 = 3,415.44 : x
  2. Step 2: Convert to fraction form
    12,180.72/18,269.46 = 3,415.44/x
  3. Step 3: Cross multiply
    12,180.72x = 18,269.46 × 3,415.44
  4. Step 4: Simplify right side
    12,180.72x = 62,398,244.46
  5. Step 5: Solve for x
    x = 62,398,244.46/12,180.72
  6. Step 6: Final answer
    x = 5,122.71

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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.