Home / 12,021.60-18,033.84-4,229.28

Finding the Fourth Proportional to 12,021.60, 18,033.84 and 4,229.28

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Solution

The fourth proportional to 12,021.60, 18,033.84 and 4,229.28 is: 6,344.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,021.60 : 18,033.84 = 4,229.28 : x
  2. Step 2: Convert to fraction form
    12,021.60/18,033.84 = 4,229.28/x
  3. Step 3: Cross multiply
    12,021.60x = 18,033.84 × 4,229.28
  4. Step 4: Simplify right side
    12,021.60x = 76,270,158.84
  5. Step 5: Solve for x
    x = 76,270,158.84/12,021.60
  6. Step 6: Final answer
    x = 6,344.43

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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.