Home / 12,591.55-18,887.99-3,231.65

Finding the Fourth Proportional to 12,591.55, 18,887.99 and 3,231.65

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Solution

The fourth proportional to 12,591.55, 18,887.99 and 3,231.65 is: 4,847.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,591.55 : 18,887.99 = 3,231.65 : x
  2. Step 2: Convert to fraction form
    12,591.55/18,887.99 = 3,231.65/x
  3. Step 3: Cross multiply
    12,591.55x = 18,887.99 × 3,231.65
  4. Step 4: Simplify right side
    12,591.55x = 61,039,286.52
  5. Step 5: Solve for x
    x = 61,039,286.52/12,591.55
  6. Step 6: Final answer
    x = 4,847.64

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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.