Home / 12,122.07-18,177.36-4,221.83

Finding the Fourth Proportional to 12,122.07, 18,177.36 and 4,221.83

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Solution

The fourth proportional to 12,122.07, 18,177.36 and 4,221.83 is: 6,330.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,122.07 : 18,177.36 = 4,221.83 : x
  2. Step 2: Convert to fraction form
    12,122.07/18,177.36 = 4,221.83/x
  3. Step 3: Cross multiply
    12,122.07x = 18,177.36 × 4,221.83
  4. Step 4: Simplify right side
    12,122.07x = 76,741,723.77
  5. Step 5: Solve for x
    x = 76,741,723.77/12,122.07
  6. Step 6: Final answer
    x = 6,330.74

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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.