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Finding the Fourth Proportional to 19,198.82, 28,806.48 and 7,356.21

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Solution

The fourth proportional to 19,198.82, 28,806.48 and 7,356.21 is: 11,037.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,198.82 : 28,806.48 = 7,356.21 : x
  2. Step 2: Convert to fraction form
    19,198.82/28,806.48 = 7,356.21/x
  3. Step 3: Cross multiply
    19,198.82x = 28,806.48 × 7,356.21
  4. Step 4: Simplify right side
    19,198.82x = 211,906,516.24
  5. Step 5: Solve for x
    x = 211,906,516.24/19,198.82
  6. Step 6: Final answer
    x = 11,037.48

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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.