Home / 20,268.03-30,375.90-8,408.40

Finding the Fourth Proportional to 20,268.03, 30,375.90 and 8,408.40

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Solution

The fourth proportional to 20,268.03, 30,375.90 and 8,408.40 is: 12,601.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,268.03 : 30,375.90 = 8,408.40 : x
  2. Step 2: Convert to fraction form
    20,268.03/30,375.90 = 8,408.40/x
  3. Step 3: Cross multiply
    20,268.03x = 30,375.90 × 8,408.40
  4. Step 4: Simplify right side
    20,268.03x = 255,412,717.56
  5. Step 5: Solve for x
    x = 255,412,717.56/20,268.03
  6. Step 6: Final answer
    x = 12,601.75

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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.