Home / 20,131.26-30,178.26-7,647.54

Finding the Fourth Proportional to 20,131.26, 30,178.26 and 7,647.54

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Solution

The fourth proportional to 20,131.26, 30,178.26 and 7,647.54 is: 11,464.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,131.26 : 30,178.26 = 7,647.54 : x
  2. Step 2: Convert to fraction form
    20,131.26/30,178.26 = 7,647.54/x
  3. Step 3: Cross multiply
    20,131.26x = 30,178.26 × 7,647.54
  4. Step 4: Simplify right side
    20,131.26x = 230,789,450.48
  5. Step 5: Solve for x
    x = 230,789,450.48/20,131.26
  6. Step 6: Final answer
    x = 11,464.23

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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.