Home / 12,020.88-18,031.32-4,229.76

Finding the Fourth Proportional to 12,020.88, 18,031.32 and 4,229.76

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Solution

The fourth proportional to 12,020.88, 18,031.32 and 4,229.76 is: 6,344.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,020.88 : 18,031.32 = 4,229.76 : x
  2. Step 2: Convert to fraction form
    12,020.88/18,031.32 = 4,229.76/x
  3. Step 3: Cross multiply
    12,020.88x = 18,031.32 × 4,229.76
  4. Step 4: Simplify right side
    12,020.88x = 76,268,156.08
  5. Step 5: Solve for x
    x = 76,268,156.08/12,020.88
  6. Step 6: Final answer
    x = 6,344.64

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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.