Home / 17,921.67-26,879.48-5,438.69

Finding the Fourth Proportional to 17,921.67, 26,879.48 and 5,438.69

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Solution

The fourth proportional to 17,921.67, 26,879.48 and 5,438.69 is: 8,157.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,921.67 : 26,879.48 = 5,438.69 : x
  2. Step 2: Convert to fraction form
    17,921.67/26,879.48 = 5,438.69/x
  3. Step 3: Cross multiply
    17,921.67x = 26,879.48 × 5,438.69
  4. Step 4: Simplify right side
    17,921.67x = 146,189,269.88
  5. Step 5: Solve for x
    x = 146,189,269.88/17,921.67
  6. Step 6: Final answer
    x = 8,157.12

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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.