Home / 12,183.89-18,272.18-4,390.88

Finding the Fourth Proportional to 12,183.89, 18,272.18 and 4,390.88

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Solution

The fourth proportional to 12,183.89, 18,272.18 and 4,390.88 is: 6,585.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,183.89 : 18,272.18 = 4,390.88 : x
  2. Step 2: Convert to fraction form
    12,183.89/18,272.18 = 4,390.88/x
  3. Step 3: Cross multiply
    12,183.89x = 18,272.18 × 4,390.88
  4. Step 4: Simplify right side
    12,183.89x = 80,230,869.33
  5. Step 5: Solve for x
    x = 80,230,869.33/12,183.89
  6. Step 6: Final answer
    x = 6,585.00

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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.