Home / 20,229.11-30,349.96-18,135.93

Finding the Fourth Proportional to 20,229.11, 30,349.96 and 18,135.93

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Solution

The fourth proportional to 20,229.11, 30,349.96 and 18,135.93 is: 27,209.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,229.11 : 30,349.96 = 18,135.93 : x
  2. Step 2: Convert to fraction form
    20,229.11/30,349.96 = 18,135.93/x
  3. Step 3: Cross multiply
    20,229.11x = 30,349.96 × 18,135.93
  4. Step 4: Simplify right side
    20,229.11x = 550,424,704.72
  5. Step 5: Solve for x
    x = 550,424,704.72/20,229.11
  6. Step 6: Final answer
    x = 27,209.54

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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.