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Finding the Fourth Proportional to 11,993.44, 17,990.28 and 4,202.44

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Solution

The fourth proportional to 11,993.44, 17,990.28 and 4,202.44 is: 6,303.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,993.44 : 17,990.28 = 4,202.44 : x
  2. Step 2: Convert to fraction form
    11,993.44/17,990.28 = 4,202.44/x
  3. Step 3: Cross multiply
    11,993.44x = 17,990.28 × 4,202.44
  4. Step 4: Simplify right side
    11,993.44x = 75,603,072.28
  5. Step 5: Solve for x
    x = 75,603,072.28/11,993.44
  6. Step 6: Final answer
    x = 6,303.70

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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.