Home / 11,211.54-16,817.49-3,420.42

Finding the Fourth Proportional to 11,211.54, 16,817.49 and 3,420.42

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Solution

The fourth proportional to 11,211.54, 16,817.49 and 3,420.42 is: 5,130.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,211.54 : 16,817.49 = 3,420.42 : x
  2. Step 2: Convert to fraction form
    11,211.54/16,817.49 = 3,420.42/x
  3. Step 3: Cross multiply
    11,211.54x = 16,817.49 × 3,420.42
  4. Step 4: Simplify right side
    11,211.54x = 57,522,879.15
  5. Step 5: Solve for x
    x = 57,522,879.15/11,211.54
  6. Step 6: Final answer
    x = 5,130.68

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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.