Home / 8,467.20-11,750.40-8,121.60

Finding the Fourth Proportional to 8,467.20, 11,750.40 and 8,121.60

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Solution

The fourth proportional to 8,467.20, 11,750.40 and 8,121.60 is: 11,270.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,467.20 : 11,750.40 = 8,121.60 : x
  2. Step 2: Convert to fraction form
    8,467.20/11,750.40 = 8,121.60/x
  3. Step 3: Cross multiply
    8,467.20x = 11,750.40 × 8,121.60
  4. Step 4: Simplify right side
    8,467.20x = 95,432,048.64
  5. Step 5: Solve for x
    x = 95,432,048.64/8,467.20
  6. Step 6: Final answer
    x = 11,270.79

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.