Home / 20,183.74-30,279.29-8,331.05

Finding the Fourth Proportional to 20,183.74, 30,279.29 and 8,331.05

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Solution

The fourth proportional to 20,183.74, 30,279.29 and 8,331.05 is: 12,498.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,183.74 : 30,279.29 = 8,331.05 : x
  2. Step 2: Convert to fraction form
    20,183.74/30,279.29 = 8,331.05/x
  3. Step 3: Cross multiply
    20,183.74x = 30,279.29 × 8,331.05
  4. Step 4: Simplify right side
    20,183.74x = 252,258,313.00
  5. Step 5: Solve for x
    x = 252,258,313.00/20,183.74
  6. Step 6: Final answer
    x = 12,498.10

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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.