Home / 12,321.72-18,480.85-4,001.85

Finding the Fourth Proportional to 12,321.72, 18,480.85 and 4,001.85

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Solution

The fourth proportional to 12,321.72, 18,480.85 and 4,001.85 is: 6,002.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,321.72 : 18,480.85 = 4,001.85 : x
  2. Step 2: Convert to fraction form
    12,321.72/18,480.85 = 4,001.85/x
  3. Step 3: Cross multiply
    12,321.72x = 18,480.85 × 4,001.85
  4. Step 4: Simplify right side
    12,321.72x = 73,957,579.57
  5. Step 5: Solve for x
    x = 73,957,579.57/12,321.72
  6. Step 6: Final answer
    x = 6,002.21

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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.