Home / 13,691.21-20,535.80-3,830.27

Finding the Fourth Proportional to 13,691.21, 20,535.80 and 3,830.27

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Solution

The fourth proportional to 13,691.21, 20,535.80 and 3,830.27 is: 5,745.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,691.21 : 20,535.80 = 3,830.27 : x
  2. Step 2: Convert to fraction form
    13,691.21/20,535.80 = 3,830.27/x
  3. Step 3: Cross multiply
    13,691.21x = 20,535.80 × 3,830.27
  4. Step 4: Simplify right side
    13,691.21x = 78,657,536.84
  5. Step 5: Solve for x
    x = 78,657,536.84/13,691.21
  6. Step 6: Final answer
    x = 5,745.11

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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.