Home / 12,121.86-18,183.03-3,801.70

Finding the Fourth Proportional to 12,121.86, 18,183.03 and 3,801.70

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Solution

The fourth proportional to 12,121.86, 18,183.03 and 3,801.70 is: 5,702.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,121.86 : 18,183.03 = 3,801.70 : x
  2. Step 2: Convert to fraction form
    12,121.86/18,183.03 = 3,801.70/x
  3. Step 3: Cross multiply
    12,121.86x = 18,183.03 × 3,801.70
  4. Step 4: Simplify right side
    12,121.86x = 69,126,425.15
  5. Step 5: Solve for x
    x = 69,126,425.15/12,121.86
  6. Step 6: Final answer
    x = 5,702.63

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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.