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Finding the Fourth Proportional to 19,243.82, 28,843.32 and 8,146.82

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Solution

The fourth proportional to 19,243.82, 28,843.32 and 8,146.82 is: 12,210.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,243.82 : 28,843.32 = 8,146.82 : x
  2. Step 2: Convert to fraction form
    19,243.82/28,843.32 = 8,146.82/x
  3. Step 3: Cross multiply
    19,243.82x = 28,843.32 × 8,146.82
  4. Step 4: Simplify right side
    19,243.82x = 234,981,336.24
  5. Step 5: Solve for x
    x = 234,981,336.24/19,243.82
  6. Step 6: Final answer
    x = 12,210.74

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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.