Home / 11,211.18-16,819.26-3,420.60

Finding the Fourth Proportional to 11,211.18, 16,819.26 and 3,420.60

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Solution

The fourth proportional to 11,211.18, 16,819.26 and 3,420.60 is: 5,131.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,211.18 : 16,819.26 = 3,420.60 : x
  2. Step 2: Convert to fraction form
    11,211.18/16,819.26 = 3,420.60/x
  3. Step 3: Cross multiply
    11,211.18x = 16,819.26 × 3,420.60
  4. Step 4: Simplify right side
    11,211.18x = 57,531,960.76
  5. Step 5: Solve for x
    x = 57,531,960.76/11,211.18
  6. Step 6: Final answer
    x = 5,131.66

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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.