Home / 12,132.48-18,198.83-3,812.32

Finding the Fourth Proportional to 12,132.48, 18,198.83 and 3,812.32

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Solution

The fourth proportional to 12,132.48, 18,198.83 and 3,812.32 is: 5,718.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,132.48 : 18,198.83 = 3,812.32 : x
  2. Step 2: Convert to fraction form
    12,132.48/18,198.83 = 3,812.32/x
  3. Step 3: Cross multiply
    12,132.48x = 18,198.83 × 3,812.32
  4. Step 4: Simplify right side
    12,132.48x = 69,379,672.05
  5. Step 5: Solve for x
    x = 69,379,672.05/12,132.48
  6. Step 6: Final answer
    x = 5,718.51

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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.