Home / 20,154.64-30,231.87-5,161.73

Finding the Fourth Proportional to 20,154.64, 30,231.87 and 5,161.73

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Solution

The fourth proportional to 20,154.64, 30,231.87 and 5,161.73 is: 7,742.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,154.64 : 30,231.87 = 5,161.73 : x
  2. Step 2: Convert to fraction form
    20,154.64/30,231.87 = 5,161.73/x
  3. Step 3: Cross multiply
    20,154.64x = 30,231.87 × 5,161.73
  4. Step 4: Simplify right side
    20,154.64x = 156,048,879.60
  5. Step 5: Solve for x
    x = 156,048,879.60/20,154.64
  6. Step 6: Final answer
    x = 7,742.58

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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.