Home / 12,121.74-18,180.58-3,357.54

Finding the Fourth Proportional to 12,121.74, 18,180.58 and 3,357.54

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Solution

The fourth proportional to 12,121.74, 18,180.58 and 3,357.54 is: 5,035.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,121.74 : 18,180.58 = 3,357.54 : x
  2. Step 2: Convert to fraction form
    12,121.74/18,180.58 = 3,357.54/x
  3. Step 3: Cross multiply
    12,121.74x = 18,180.58 × 3,357.54
  4. Step 4: Simplify right side
    12,121.74x = 61,042,024.57
  5. Step 5: Solve for x
    x = 61,042,024.57/12,121.74
  6. Step 6: Final answer
    x = 5,035.75

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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.