Home / 18,891.24-28,311.30-7,198.08

Finding the Fourth Proportional to 18,891.24, 28,311.30 and 7,198.08

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Solution

The fourth proportional to 18,891.24, 28,311.30 and 7,198.08 is: 10,787.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,891.24 : 28,311.30 = 7,198.08 : x
  2. Step 2: Convert to fraction form
    18,891.24/28,311.30 = 7,198.08/x
  3. Step 3: Cross multiply
    18,891.24x = 28,311.30 × 7,198.08
  4. Step 4: Simplify right side
    18,891.24x = 203,787,002.30
  5. Step 5: Solve for x
    x = 203,787,002.30/18,891.24
  6. Step 6: Final answer
    x = 10,787.38

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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.