Home / 33,147.28-49,734.60-13,420.81

Finding the Fourth Proportional to 33,147.28, 49,734.60 and 13,420.81

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Solution

The fourth proportional to 33,147.28, 49,734.60 and 13,420.81 is: 20,136.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    33,147.28 : 49,734.60 = 13,420.81 : x
  2. Step 2: Convert to fraction form
    33,147.28/49,734.60 = 13,420.81/x
  3. Step 3: Cross multiply
    33,147.28x = 49,734.60 × 13,420.81
  4. Step 4: Simplify right side
    33,147.28x = 667,478,617.03
  5. Step 5: Solve for x
    x = 667,478,617.03/33,147.28
  6. Step 6: Final answer
    x = 20,136.75

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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.