Home / 17,921.19-26,879.94-5,440.71

Finding the Fourth Proportional to 17,921.19, 26,879.94 and 5,440.71

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Solution

The fourth proportional to 17,921.19, 26,879.94 and 5,440.71 is: 8,160.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,921.19 : 26,879.94 = 5,440.71 : x
  2. Step 2: Convert to fraction form
    17,921.19/26,879.94 = 5,440.71/x
  3. Step 3: Cross multiply
    17,921.19x = 26,879.94 × 5,440.71
  4. Step 4: Simplify right side
    17,921.19x = 146,245,958.36
  5. Step 5: Solve for x
    x = 146,245,958.36/17,921.19
  6. Step 6: Final answer
    x = 8,160.50

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Double scale
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Similar ratio
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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.