Home / 20,321.68-30,486.75-7,183.48

Finding the Fourth Proportional to 20,321.68, 30,486.75 and 7,183.48

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Solution

The fourth proportional to 20,321.68, 30,486.75 and 7,183.48 is: 10,776.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,321.68 : 30,486.75 = 7,183.48 : x
  2. Step 2: Convert to fraction form
    20,321.68/30,486.75 = 7,183.48/x
  3. Step 3: Cross multiply
    20,321.68x = 30,486.75 × 7,183.48
  4. Step 4: Simplify right side
    20,321.68x = 219,000,958.89
  5. Step 5: Solve for x
    x = 219,000,958.89/20,321.68
  6. Step 6: Final answer
    x = 10,776.72

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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.