Home / 12,226.76-18,311.20-7,768.48

Finding the Fourth Proportional to 12,226.76, 18,311.20 and 7,768.48

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Solution

The fourth proportional to 12,226.76, 18,311.20 and 7,768.48 is: 11,634.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,226.76 : 18,311.20 = 7,768.48 : x
  2. Step 2: Convert to fraction form
    12,226.76/18,311.20 = 7,768.48/x
  3. Step 3: Cross multiply
    12,226.76x = 18,311.20 × 7,768.48
  4. Step 4: Simplify right side
    12,226.76x = 142,250,190.98
  5. Step 5: Solve for x
    x = 142,250,190.98/12,226.76
  6. Step 6: Final answer
    x = 11,634.33

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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.