Home / 11,289.32-16,940.44-8,817.20

Finding the Fourth Proportional to 11,289.32, 16,940.44 and 8,817.20

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Solution

The fourth proportional to 11,289.32, 16,940.44 and 8,817.20 is: 13,230.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,289.32 : 16,940.44 = 8,817.20 : x
  2. Step 2: Convert to fraction form
    11,289.32/16,940.44 = 8,817.20/x
  3. Step 3: Cross multiply
    11,289.32x = 16,940.44 × 8,817.20
  4. Step 4: Simplify right side
    11,289.32x = 149,367,247.57
  5. Step 5: Solve for x
    x = 149,367,247.57/11,289.32
  6. Step 6: Final answer
    x = 13,230.85

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1.5x scale

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.