Home / 13,621.56-20,433.52-3,760.85

Finding the Fourth Proportional to 13,621.56, 20,433.52 and 3,760.85

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Solution

The fourth proportional to 13,621.56, 20,433.52 and 3,760.85 is: 5,641.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,621.56 : 20,433.52 = 3,760.85 : x
  2. Step 2: Convert to fraction form
    13,621.56/20,433.52 = 3,760.85/x
  3. Step 3: Cross multiply
    13,621.56x = 20,433.52 × 3,760.85
  4. Step 4: Simplify right side
    13,621.56x = 76,847,301.52
  5. Step 5: Solve for x
    x = 76,847,301.52/13,621.56
  6. Step 6: Final answer
    x = 5,641.59

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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.