Home / 18,936.82-28,405.20-5,789.19

Finding the Fourth Proportional to 18,936.82, 28,405.20 and 5,789.19

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Solution

The fourth proportional to 18,936.82, 28,405.20 and 5,789.19 is: 8,683.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,936.82 : 28,405.20 = 5,789.19 : x
  2. Step 2: Convert to fraction form
    18,936.82/28,405.20 = 5,789.19/x
  3. Step 3: Cross multiply
    18,936.82x = 28,405.20 × 5,789.19
  4. Step 4: Simplify right side
    18,936.82x = 164,443,107.80
  5. Step 5: Solve for x
    x = 164,443,107.80/18,936.82
  6. Step 6: Final answer
    x = 8,683.78

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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.