Home / 13,938.92-20,910.30-5,173.10

Finding the Fourth Proportional to 13,938.92, 20,910.30 and 5,173.10

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Solution

The fourth proportional to 13,938.92, 20,910.30 and 5,173.10 is: 7,760.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,938.92 : 20,910.30 = 5,173.10 : x
  2. Step 2: Convert to fraction form
    13,938.92/20,910.30 = 5,173.10/x
  3. Step 3: Cross multiply
    13,938.92x = 20,910.30 × 5,173.10
  4. Step 4: Simplify right side
    13,938.92x = 108,171,072.93
  5. Step 5: Solve for x
    x = 108,171,072.93/13,938.92
  6. Step 6: Final answer
    x = 7,760.36

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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.