Home / 13,751.54-20,628.86-3,891.59

Finding the Fourth Proportional to 13,751.54, 20,628.86 and 3,891.59

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Solution

The fourth proportional to 13,751.54, 20,628.86 and 3,891.59 is: 5,837.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,751.54 : 20,628.86 = 3,891.59 : x
  2. Step 2: Convert to fraction form
    13,751.54/20,628.86 = 3,891.59/x
  3. Step 3: Cross multiply
    13,751.54x = 20,628.86 × 3,891.59
  4. Step 4: Simplify right side
    13,751.54x = 80,278,942.69
  5. Step 5: Solve for x
    x = 80,278,942.69/13,751.54
  6. Step 6: Final answer
    x = 5,837.82

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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.