Home / 13,755.12-20,633.49-3,893.58

Finding the Fourth Proportional to 13,755.12, 20,633.49 and 3,893.58

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Solution

The fourth proportional to 13,755.12, 20,633.49 and 3,893.58 is: 5,840.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,755.12 : 20,633.49 = 3,893.58 : x
  2. Step 2: Convert to fraction form
    13,755.12/20,633.49 = 3,893.58/x
  3. Step 3: Cross multiply
    13,755.12x = 20,633.49 × 3,893.58
  4. Step 4: Simplify right side
    13,755.12x = 80,338,143.99
  5. Step 5: Solve for x
    x = 80,338,143.99/13,755.12
  6. Step 6: Final answer
    x = 5,840.60

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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.