Home / 13,487.81-20,202.24-11,121.23

Finding the Fourth Proportional to 13,487.81, 20,202.24 and 11,121.23

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Solution

The fourth proportional to 13,487.81, 20,202.24 and 11,121.23 is: 16,657.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,487.81 : 20,202.24 = 11,121.23 : x
  2. Step 2: Convert to fraction form
    13,487.81/20,202.24 = 11,121.23/x
  3. Step 3: Cross multiply
    13,487.81x = 20,202.24 × 11,121.23
  4. Step 4: Simplify right side
    13,487.81x = 224,673,757.56
  5. Step 5: Solve for x
    x = 224,673,757.56/13,487.81
  6. Step 6: Final answer
    x = 16,657.54

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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.