Home / 13,289.92-19,939.11-3,929.99

Finding the Fourth Proportional to 13,289.92, 19,939.11 and 3,929.99

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Solution

The fourth proportional to 13,289.92, 19,939.11 and 3,929.99 is: 5,896.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,289.92 : 19,939.11 = 3,929.99 : x
  2. Step 2: Convert to fraction form
    13,289.92/19,939.11 = 3,929.99/x
  3. Step 3: Cross multiply
    13,289.92x = 19,939.11 × 3,929.99
  4. Step 4: Simplify right side
    13,289.92x = 78,360,552.76
  5. Step 5: Solve for x
    x = 78,360,552.76/13,289.92
  6. Step 6: Final answer
    x = 5,896.24

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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.