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Finding the Fourth Proportional to 18,769.68, 28,169.04 and 9,419.04

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Solution

The fourth proportional to 18,769.68, 28,169.04 and 9,419.04 is: 14,135.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,769.68 : 28,169.04 = 9,419.04 : x
  2. Step 2: Convert to fraction form
    18,769.68/28,169.04 = 9,419.04/x
  3. Step 3: Cross multiply
    18,769.68x = 28,169.04 × 9,419.04
  4. Step 4: Simplify right side
    18,769.68x = 265,325,314.52
  5. Step 5: Solve for x
    x = 265,325,314.52/18,769.68
  6. Step 6: Final answer
    x = 14,135.85

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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.