Home / 13,938.92-20,908.17-3,409.02

Finding the Fourth Proportional to 13,938.92, 20,908.17 and 3,409.02

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Solution

The fourth proportional to 13,938.92, 20,908.17 and 3,409.02 is: 5,113.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,938.92 : 20,908.17 = 3,409.02 : x
  2. Step 2: Convert to fraction form
    13,938.92/20,908.17 = 3,409.02/x
  3. Step 3: Cross multiply
    13,938.92x = 20,908.17 × 3,409.02
  4. Step 4: Simplify right side
    13,938.92x = 71,276,369.69
  5. Step 5: Solve for x
    x = 71,276,369.69/13,938.92
  6. Step 6: Final answer
    x = 5,113.48

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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.