Home / 11,211.15-16,816.46-3,420.03

Finding the Fourth Proportional to 11,211.15, 16,816.46 and 3,420.03

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Solution

The fourth proportional to 11,211.15, 16,816.46 and 3,420.03 is: 5,129.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,211.15 : 16,816.46 = 3,420.03 : x
  2. Step 2: Convert to fraction form
    11,211.15/16,816.46 = 3,420.03/x
  3. Step 3: Cross multiply
    11,211.15x = 16,816.46 × 3,420.03
  4. Step 4: Simplify right side
    11,211.15x = 57,512,780.59
  5. Step 5: Solve for x
    x = 57,512,780.59/11,211.15
  6. Step 6: Final answer
    x = 5,129.96

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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.