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Finding the Fourth Proportional to 19,310.74, 28,966.61 and 6,163.11

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Solution

The fourth proportional to 19,310.74, 28,966.61 and 6,163.11 is: 9,244.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,310.74 : 28,966.61 = 6,163.11 : x
  2. Step 2: Convert to fraction form
    19,310.74/28,966.61 = 6,163.11/x
  3. Step 3: Cross multiply
    19,310.74x = 28,966.61 × 6,163.11
  4. Step 4: Simplify right side
    19,310.74x = 178,524,419.16
  5. Step 5: Solve for x
    x = 178,524,419.16/19,310.74
  6. Step 6: Final answer
    x = 9,244.83

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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.