Home / 17,921.68-26,879.49-5,438.71

Finding the Fourth Proportional to 17,921.68, 26,879.49 and 5,438.71

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Solution

The fourth proportional to 17,921.68, 26,879.49 and 5,438.71 is: 8,157.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,921.68 : 26,879.49 = 5,438.71 : x
  2. Step 2: Convert to fraction form
    17,921.68/26,879.49 = 5,438.71/x
  3. Step 3: Cross multiply
    17,921.68x = 26,879.49 × 5,438.71
  4. Step 4: Simplify right side
    17,921.68x = 146,189,751.06
  5. Step 5: Solve for x
    x = 146,189,751.06/17,921.68
  6. Step 6: Final answer
    x = 8,157.15

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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.