Home / 18,519.18-27,771.30-6,829.80

Finding the Fourth Proportional to 18,519.18, 27,771.30 and 6,829.80

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Solution

The fourth proportional to 18,519.18, 27,771.30 and 6,829.80 is: 10,241.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,519.18 : 27,771.30 = 6,829.80 : x
  2. Step 2: Convert to fraction form
    18,519.18/27,771.30 = 6,829.80/x
  3. Step 3: Cross multiply
    18,519.18x = 27,771.30 × 6,829.80
  4. Step 4: Simplify right side
    18,519.18x = 189,672,424.74
  5. Step 5: Solve for x
    x = 189,672,424.74/18,519.18
  6. Step 6: Final answer
    x = 10,241.95

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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.