Home / 12,053.78-18,078.30-3,286.61

Finding the Fourth Proportional to 12,053.78, 18,078.30 and 3,286.61

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Solution

The fourth proportional to 12,053.78, 18,078.30 and 3,286.61 is: 4,929.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,053.78 : 18,078.30 = 3,286.61 : x
  2. Step 2: Convert to fraction form
    12,053.78/18,078.30 = 3,286.61/x
  3. Step 3: Cross multiply
    12,053.78x = 18,078.30 × 3,286.61
  4. Step 4: Simplify right side
    12,053.78x = 59,416,231.17
  5. Step 5: Solve for x
    x = 59,416,231.17/12,053.78
  6. Step 6: Final answer
    x = 4,929.26

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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.