Home / 12,380.62-18,576.60-5,362.78

Finding the Fourth Proportional to 12,380.62, 18,576.60 and 5,362.78

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Solution

The fourth proportional to 12,380.62, 18,576.60 and 5,362.78 is: 8,046.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,380.62 : 18,576.60 = 5,362.78 : x
  2. Step 2: Convert to fraction form
    12,380.62/18,576.60 = 5,362.78/x
  3. Step 3: Cross multiply
    12,380.62x = 18,576.60 × 5,362.78
  4. Step 4: Simplify right side
    12,380.62x = 99,622,218.95
  5. Step 5: Solve for x
    x = 99,622,218.95/12,380.62
  6. Step 6: Final answer
    x = 8,046.63

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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.