Home / 13,851.71-20,786.68-5,086.70

Finding the Fourth Proportional to 13,851.71, 20,786.68 and 5,086.70

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Solution

The fourth proportional to 13,851.71, 20,786.68 and 5,086.70 is: 7,633.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,851.71 : 20,786.68 = 5,086.70 : x
  2. Step 2: Convert to fraction form
    13,851.71/20,786.68 = 5,086.70/x
  3. Step 3: Cross multiply
    13,851.71x = 20,786.68 × 5,086.70
  4. Step 4: Simplify right side
    13,851.71x = 105,735,556.92
  5. Step 5: Solve for x
    x = 105,735,556.92/13,851.71
  6. Step 6: Final answer
    x = 7,633.39

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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.