Home / 12,140.88-18,212.33-3,375.87

Finding the Fourth Proportional to 12,140.88, 18,212.33 and 3,375.87

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Solution

The fourth proportional to 12,140.88, 18,212.33 and 3,375.87 is: 5,064.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,140.88 : 18,212.33 = 3,375.87 : x
  2. Step 2: Convert to fraction form
    12,140.88/18,212.33 = 3,375.87/x
  3. Step 3: Cross multiply
    12,140.88x = 18,212.33 × 3,375.87
  4. Step 4: Simplify right side
    12,140.88x = 61,482,458.48
  5. Step 5: Solve for x
    x = 61,482,458.48/12,140.88
  6. Step 6: Final answer
    x = 5,064.09

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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.