Home / 13,819.51-20,729.17-3,958.80

Finding the Fourth Proportional to 13,819.51, 20,729.17 and 3,958.80

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Solution

The fourth proportional to 13,819.51, 20,729.17 and 3,958.80 is: 5,938.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,819.51 : 20,729.17 = 3,958.80 : x
  2. Step 2: Convert to fraction form
    13,819.51/20,729.17 = 3,958.80/x
  3. Step 3: Cross multiply
    13,819.51x = 20,729.17 × 3,958.80
  4. Step 4: Simplify right side
    13,819.51x = 82,062,638.20
  5. Step 5: Solve for x
    x = 82,062,638.20/13,819.51
  6. Step 6: Final answer
    x = 5,938.17

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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.