Home / 13,855.41-20,780.62-3,992.27

Finding the Fourth Proportional to 13,855.41, 20,780.62 and 3,992.27

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Solution

The fourth proportional to 13,855.41, 20,780.62 and 3,992.27 is: 5,987.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,855.41 : 20,780.62 = 3,992.27 : x
  2. Step 2: Convert to fraction form
    13,855.41/20,780.62 = 3,992.27/x
  3. Step 3: Cross multiply
    13,855.41x = 20,780.62 × 3,992.27
  4. Step 4: Simplify right side
    13,855.41x = 82,961,731.92
  5. Step 5: Solve for x
    x = 82,961,731.92/13,855.41
  6. Step 6: Final answer
    x = 5,987.68

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1.5x scale

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.