Home / 13,629.78-20,452.55-5,731.67

Finding the Fourth Proportional to 13,629.78, 20,452.55 and 5,731.67

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Solution

The fourth proportional to 13,629.78, 20,452.55 and 5,731.67 is: 8,600.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,629.78 : 20,452.55 = 5,731.67 : x
  2. Step 2: Convert to fraction form
    13,629.78/20,452.55 = 5,731.67/x
  3. Step 3: Cross multiply
    13,629.78x = 20,452.55 × 5,731.67
  4. Step 4: Simplify right side
    13,629.78x = 117,227,136.34
  5. Step 5: Solve for x
    x = 117,227,136.34/13,629.78
  6. Step 6: Final answer
    x = 8,600.81

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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.