Home / 12,221.07-18,331.67-4,429.68

Finding the Fourth Proportional to 12,221.07, 18,331.67 and 4,429.68

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Solution

The fourth proportional to 12,221.07, 18,331.67 and 4,429.68 is: 6,644.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,221.07 : 18,331.67 = 4,429.68 : x
  2. Step 2: Convert to fraction form
    12,221.07/18,331.67 = 4,429.68/x
  3. Step 3: Cross multiply
    12,221.07x = 18,331.67 × 4,429.68
  4. Step 4: Simplify right side
    12,221.07x = 81,203,431.97
  5. Step 5: Solve for x
    x = 81,203,431.97/12,221.07
  6. Step 6: Final answer
    x = 6,644.54

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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.