Home / 12,115.15-18,172.71-3,350.07

Finding the Fourth Proportional to 12,115.15, 18,172.71 and 3,350.07

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Solution

The fourth proportional to 12,115.15, 18,172.71 and 3,350.07 is: 5,025.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,115.15 : 18,172.71 = 3,350.07 : x
  2. Step 2: Convert to fraction form
    12,115.15/18,172.71 = 3,350.07/x
  3. Step 3: Cross multiply
    12,115.15x = 18,172.71 × 3,350.07
  4. Step 4: Simplify right side
    12,115.15x = 60,879,850.59
  5. Step 5: Solve for x
    x = 60,879,850.59/12,115.15
  6. Step 6: Final answer
    x = 5,025.10

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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.