Home / 13,324.96-18,390-11,082.88

Finding the Fourth Proportional to 13,324.96, 18,390 and 11,082.88

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Solution

The fourth proportional to 13,324.96, 18,390 and 11,082.88 is: 15,295.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,324.96 : 18,390 = 11,082.88 : x
  2. Step 2: Convert to fraction form
    13,324.96/18,390 = 11,082.88/x
  3. Step 3: Cross multiply
    13,324.96x = 18,390 × 11,082.88
  4. Step 4: Simplify right side
    13,324.96x = 203,814,163.20
  5. Step 5: Solve for x
    x = 203,814,163.20/13,324.96
  6. Step 6: Final answer
    x = 15,295.67

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.