Home / 13,481.15-20,222.58-4,121.49

Finding the Fourth Proportional to 13,481.15, 20,222.58 and 4,121.49

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Solution

The fourth proportional to 13,481.15, 20,222.58 and 4,121.49 is: 6,182.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,481.15 : 20,222.58 = 4,121.49 : x
  2. Step 2: Convert to fraction form
    13,481.15/20,222.58 = 4,121.49/x
  3. Step 3: Cross multiply
    13,481.15x = 20,222.58 × 4,121.49
  4. Step 4: Simplify right side
    13,481.15x = 83,347,229.35
  5. Step 5: Solve for x
    x = 83,347,229.35/13,481.15
  6. Step 6: Final answer
    x = 6,182.50

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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.