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Finding the Fourth Proportional to 19,231.65, 28,843.81 and 8,146.13

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Solution

The fourth proportional to 19,231.65, 28,843.81 and 8,146.13 is: 12,217.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,231.65 : 28,843.81 = 8,146.13 : x
  2. Step 2: Convert to fraction form
    19,231.65/28,843.81 = 8,146.13/x
  3. Step 3: Cross multiply
    19,231.65x = 28,843.81 × 8,146.13
  4. Step 4: Simplify right side
    19,231.65x = 234,965,261.37
  5. Step 5: Solve for x
    x = 234,965,261.37/19,231.65
  6. Step 6: Final answer
    x = 12,217.63

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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.