Home / 12,121.82-18,182.94-3,801.65

Finding the Fourth Proportional to 12,121.82, 18,182.94 and 3,801.65

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Solution

The fourth proportional to 12,121.82, 18,182.94 and 3,801.65 is: 5,702.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,121.82 : 18,182.94 = 3,801.65 : x
  2. Step 2: Convert to fraction form
    12,121.82/18,182.94 = 3,801.65/x
  3. Step 3: Cross multiply
    12,121.82x = 18,182.94 × 3,801.65
  4. Step 4: Simplify right side
    12,121.82x = 69,125,082.94
  5. Step 5: Solve for x
    x = 69,125,082.94/12,121.82
  6. Step 6: Final answer
    x = 5,702.54

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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.