Home / 13,584.81-20,375.03-3,721.78

Finding the Fourth Proportional to 13,584.81, 20,375.03 and 3,721.78

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Solution

The fourth proportional to 13,584.81, 20,375.03 and 3,721.78 is: 5,582.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,584.81 : 20,375.03 = 3,721.78 : x
  2. Step 2: Convert to fraction form
    13,584.81/20,375.03 = 3,721.78/x
  3. Step 3: Cross multiply
    13,584.81x = 20,375.03 × 3,721.78
  4. Step 4: Simplify right side
    13,584.81x = 75,831,379.15
  5. Step 5: Solve for x
    x = 75,831,379.15/13,584.81
  6. Step 6: Final answer
    x = 5,582.07

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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.