Home / 12,192.78-18,280.30-8,234.24

Finding the Fourth Proportional to 12,192.78, 18,280.30 and 8,234.24

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Solution

The fourth proportional to 12,192.78, 18,280.30 and 8,234.24 is: 12,345.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,192.78 : 18,280.30 = 8,234.24 : x
  2. Step 2: Convert to fraction form
    12,192.78/18,280.30 = 8,234.24/x
  3. Step 3: Cross multiply
    12,192.78x = 18,280.30 × 8,234.24
  4. Step 4: Simplify right side
    12,192.78x = 150,524,377.47
  5. Step 5: Solve for x
    x = 150,524,377.47/12,192.78
  6. Step 6: Final answer
    x = 12,345.37

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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.