Home / 19,198.32-28,780.38-7,519.68

Finding the Fourth Proportional to 19,198.32, 28,780.38 and 7,519.68

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Solution

The fourth proportional to 19,198.32, 28,780.38 and 7,519.68 is: 11,272.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,198.32 : 28,780.38 = 7,519.68 : x
  2. Step 2: Convert to fraction form
    19,198.32/28,780.38 = 7,519.68/x
  3. Step 3: Cross multiply
    19,198.32x = 28,780.38 × 7,519.68
  4. Step 4: Simplify right side
    19,198.32x = 216,419,247.88
  5. Step 5: Solve for x
    x = 216,419,247.88/19,198.32
  6. Step 6: Final answer
    x = 11,272.82

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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.