Home / 13,289.91-19,933.17-3,929.73

Finding the Fourth Proportional to 13,289.91, 19,933.17 and 3,929.73

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Solution

The fourth proportional to 13,289.91, 19,933.17 and 3,929.73 is: 5,894.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,289.91 : 19,933.17 = 3,929.73 : x
  2. Step 2: Convert to fraction form
    13,289.91/19,933.17 = 3,929.73/x
  3. Step 3: Cross multiply
    13,289.91x = 19,933.17 × 3,929.73
  4. Step 4: Simplify right side
    13,289.91x = 78,331,976.14
  5. Step 5: Solve for x
    x = 78,331,976.14/13,289.91
  6. Step 6: Final answer
    x = 5,894.09

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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.