Home / 12,158.12-18,239.22-5,584.88

Finding the Fourth Proportional to 12,158.12, 18,239.22 and 5,584.88

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Solution

The fourth proportional to 12,158.12, 18,239.22 and 5,584.88 is: 8,378.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,158.12 : 18,239.22 = 5,584.88 : x
  2. Step 2: Convert to fraction form
    12,158.12/18,239.22 = 5,584.88/x
  3. Step 3: Cross multiply
    12,158.12x = 18,239.22 × 5,584.88
  4. Step 4: Simplify right side
    12,158.12x = 101,863,854.99
  5. Step 5: Solve for x
    x = 101,863,854.99/12,158.12
  6. Step 6: Final answer
    x = 8,378.26

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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.