Home / 13,692.83-20,538.99-3,831.95

Finding the Fourth Proportional to 13,692.83, 20,538.99 and 3,831.95

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Solution

The fourth proportional to 13,692.83, 20,538.99 and 3,831.95 is: 5,747.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,692.83 : 20,538.99 = 3,831.95 : x
  2. Step 2: Convert to fraction form
    13,692.83/20,538.99 = 3,831.95/x
  3. Step 3: Cross multiply
    13,692.83x = 20,538.99 × 3,831.95
  4. Step 4: Simplify right side
    13,692.83x = 78,704,434.08
  5. Step 5: Solve for x
    x = 78,704,434.08/13,692.83
  6. Step 6: Final answer
    x = 5,747.86

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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.