Home / 13,113.31-19,669.97-3,879.31

Finding the Fourth Proportional to 13,113.31, 19,669.97 and 3,879.31

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Solution

The fourth proportional to 13,113.31, 19,669.97 and 3,879.31 is: 5,818.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,113.31 : 19,669.97 = 3,879.31 : x
  2. Step 2: Convert to fraction form
    13,113.31/19,669.97 = 3,879.31/x
  3. Step 3: Cross multiply
    13,113.31x = 19,669.97 × 3,879.31
  4. Step 4: Simplify right side
    13,113.31x = 76,305,891.92
  5. Step 5: Solve for x
    x = 76,305,891.92/13,113.31
  6. Step 6: Final answer
    x = 5,818.97

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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.