Home / 11,103.12-16,657.20-3,311.64

Finding the Fourth Proportional to 11,103.12, 16,657.20 and 3,311.64

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Solution

The fourth proportional to 11,103.12, 16,657.20 and 3,311.64 is: 4,968.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,103.12 : 16,657.20 = 3,311.64 : x
  2. Step 2: Convert to fraction form
    11,103.12/16,657.20 = 3,311.64/x
  3. Step 3: Cross multiply
    11,103.12x = 16,657.20 × 3,311.64
  4. Step 4: Simplify right side
    11,103.12x = 55,162,649.81
  5. Step 5: Solve for x
    x = 55,162,649.81/11,103.12
  6. Step 6: Final answer
    x = 4,968.21

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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.