Home / 13,851.09-20,786.66-5,418.84

Finding the Fourth Proportional to 13,851.09, 20,786.66 and 5,418.84

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Solution

The fourth proportional to 13,851.09, 20,786.66 and 5,418.84 is: 8,132.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,851.09 : 20,786.66 = 5,418.84 : x
  2. Step 2: Convert to fraction form
    13,851.09/20,786.66 = 5,418.84/x
  3. Step 3: Cross multiply
    13,851.09x = 20,786.66 × 5,418.84
  4. Step 4: Simplify right side
    13,851.09x = 112,639,584.67
  5. Step 5: Solve for x
    x = 112,639,584.67/13,851.09
  6. Step 6: Final answer
    x = 8,132.18

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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.