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Finding the Fourth Proportional to 19,169.46, 28,742.04 and 8,083.80

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Solution

The fourth proportional to 19,169.46, 28,742.04 and 8,083.80 is: 12,120.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,169.46 : 28,742.04 = 8,083.80 : x
  2. Step 2: Convert to fraction form
    19,169.46/28,742.04 = 8,083.80/x
  3. Step 3: Cross multiply
    19,169.46x = 28,742.04 × 8,083.80
  4. Step 4: Simplify right side
    19,169.46x = 232,344,902.95
  5. Step 5: Solve for x
    x = 232,344,902.95/19,169.46
  6. Step 6: Final answer
    x = 12,120.58

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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.