Home / 20,131.64-30,183.68-10,251.80

Finding the Fourth Proportional to 20,131.64, 30,183.68 and 10,251.80

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Solution

The fourth proportional to 20,131.64, 30,183.68 and 10,251.80 is: 15,370.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,131.64 : 30,183.68 = 10,251.80 : x
  2. Step 2: Convert to fraction form
    20,131.64/30,183.68 = 10,251.80/x
  3. Step 3: Cross multiply
    20,131.64x = 30,183.68 × 10,251.80
  4. Step 4: Simplify right side
    20,131.64x = 309,437,050.62
  5. Step 5: Solve for x
    x = 309,437,050.62/20,131.64
  6. Step 6: Final answer
    x = 15,370.68

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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.