Home / 10,120.39-13,960.83-8,234.08

Finding the Fourth Proportional to 10,120.39, 13,960.83 and 8,234.08

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Solution

The fourth proportional to 10,120.39, 13,960.83 and 8,234.08 is: 11,358.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,120.39 : 13,960.83 = 8,234.08 : x
  2. Step 2: Convert to fraction form
    10,120.39/13,960.83 = 8,234.08/x
  3. Step 3: Cross multiply
    10,120.39x = 13,960.83 × 8,234.08
  4. Step 4: Simplify right side
    10,120.39x = 114,954,591.09
  5. Step 5: Solve for x
    x = 114,954,591.09/10,120.39
  6. Step 6: Final answer
    x = 11,358.71

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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.