Home / 13,851.86-20,786.01-5,535.80

Finding the Fourth Proportional to 13,851.86, 20,786.01 and 5,535.80

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Solution

The fourth proportional to 13,851.86, 20,786.01 and 5,535.80 is: 8,306.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,851.86 : 20,786.01 = 5,535.80 : x
  2. Step 2: Convert to fraction form
    13,851.86/20,786.01 = 5,535.80/x
  3. Step 3: Cross multiply
    13,851.86x = 20,786.01 × 5,535.80
  4. Step 4: Simplify right side
    13,851.86x = 115,067,194.16
  5. Step 5: Solve for x
    x = 115,067,194.16/13,851.86
  6. Step 6: Final answer
    x = 8,306.99

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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.