Home / 20,121.08-30,183.96-7,650.50

Finding the Fourth Proportional to 20,121.08, 30,183.96 and 7,650.50

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Solution

The fourth proportional to 20,121.08, 30,183.96 and 7,650.50 is: 11,476.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,121.08 : 30,183.96 = 7,650.50 : x
  2. Step 2: Convert to fraction form
    20,121.08/30,183.96 = 7,650.50/x
  3. Step 3: Cross multiply
    20,121.08x = 30,183.96 × 7,650.50
  4. Step 4: Simplify right side
    20,121.08x = 230,922,385.98
  5. Step 5: Solve for x
    x = 230,922,385.98/20,121.08
  6. Step 6: Final answer
    x = 11,476.64

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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.