Home / 12,183.85-18,278.08-3,865.96

Finding the Fourth Proportional to 12,183.85, 18,278.08 and 3,865.96

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Solution

The fourth proportional to 12,183.85, 18,278.08 and 3,865.96 is: 5,799.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,183.85 : 18,278.08 = 3,865.96 : x
  2. Step 2: Convert to fraction form
    12,183.85/18,278.08 = 3,865.96/x
  3. Step 3: Cross multiply
    12,183.85x = 18,278.08 × 3,865.96
  4. Step 4: Simplify right side
    12,183.85x = 70,662,326.16
  5. Step 5: Solve for x
    x = 70,662,326.16/12,183.85
  6. Step 6: Final answer
    x = 5,799.67

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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.