Home / 12,226.55-16,872.71-7,190.97

Finding the Fourth Proportional to 12,226.55, 16,872.71 and 7,190.97

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Solution

The fourth proportional to 12,226.55, 16,872.71 and 7,190.97 is: 9,923.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,226.55 : 16,872.71 = 7,190.97 : x
  2. Step 2: Convert to fraction form
    12,226.55/16,872.71 = 7,190.97/x
  3. Step 3: Cross multiply
    12,226.55x = 16,872.71 × 7,190.97
  4. Step 4: Simplify right side
    12,226.55x = 121,331,115.47
  5. Step 5: Solve for x
    x = 121,331,115.47/12,226.55
  6. Step 6: Final answer
    x = 9,923.58

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.