Home / 8,020.40-12,024.84-4,121.60

Finding the Fourth Proportional to 8,020.40, 12,024.84 and 4,121.60

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Solution

The fourth proportional to 8,020.40, 12,024.84 and 4,121.60 is: 6,179.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,020.40 : 12,024.84 = 4,121.60 : x
  2. Step 2: Convert to fraction form
    8,020.40/12,024.84 = 4,121.60/x
  3. Step 3: Cross multiply
    8,020.40x = 12,024.84 × 4,121.60
  4. Step 4: Simplify right side
    8,020.40x = 49,561,580.54
  5. Step 5: Solve for x
    x = 49,561,580.54/8,020.40
  6. Step 6: Final answer
    x = 6,179.44

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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.