Home / 13,589.21-20,383.64-3,728.48

Finding the Fourth Proportional to 13,589.21, 20,383.64 and 3,728.48

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Solution

The fourth proportional to 13,589.21, 20,383.64 and 3,728.48 is: 5,592.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,589.21 : 20,383.64 = 3,728.48 : x
  2. Step 2: Convert to fraction form
    13,589.21/20,383.64 = 3,728.48/x
  3. Step 3: Cross multiply
    13,589.21x = 20,383.64 × 3,728.48
  4. Step 4: Simplify right side
    13,589.21x = 75,999,975.42
  5. Step 5: Solve for x
    x = 75,999,975.42/13,589.21
  6. Step 6: Final answer
    x = 5,592.67

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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.