Home / 12,115.40-18,175.26-3,350.12

Finding the Fourth Proportional to 12,115.40, 18,175.26 and 3,350.12

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Solution

The fourth proportional to 12,115.40, 18,175.26 and 3,350.12 is: 5,025.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,115.40 : 18,175.26 = 3,350.12 : x
  2. Step 2: Convert to fraction form
    12,115.40/18,175.26 = 3,350.12/x
  3. Step 3: Cross multiply
    12,115.40x = 18,175.26 × 3,350.12
  4. Step 4: Simplify right side
    12,115.40x = 60,889,302.03
  5. Step 5: Solve for x
    x = 60,889,302.03/12,115.40
  6. Step 6: Final answer
    x = 5,025.78

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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.