Home / 13,836.12-20,755.67-3,840.91

Finding the Fourth Proportional to 13,836.12, 20,755.67 and 3,840.91

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Solution

The fourth proportional to 13,836.12, 20,755.67 and 3,840.91 is: 5,761.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,836.12 : 20,755.67 = 3,840.91 : x
  2. Step 2: Convert to fraction form
    13,836.12/20,755.67 = 3,840.91/x
  3. Step 3: Cross multiply
    13,836.12x = 20,755.67 × 3,840.91
  4. Step 4: Simplify right side
    13,836.12x = 79,720,628.28
  5. Step 5: Solve for x
    x = 79,720,628.28/13,836.12
  6. Step 6: Final answer
    x = 5,761.78

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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.