Home / 13,692.44-20,538.70-3,831.71

Finding the Fourth Proportional to 13,692.44, 20,538.70 and 3,831.71

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Solution

The fourth proportional to 13,692.44, 20,538.70 and 3,831.71 is: 5,747.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,692.44 : 20,538.70 = 3,831.71 : x
  2. Step 2: Convert to fraction form
    13,692.44/20,538.70 = 3,831.71/x
  3. Step 3: Cross multiply
    13,692.44x = 20,538.70 × 3,831.71
  4. Step 4: Simplify right side
    13,692.44x = 78,698,229.90
  5. Step 5: Solve for x
    x = 78,698,229.90/13,692.44
  6. Step 6: Final answer
    x = 5,747.57

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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.