Home / 20,231.91-27,919.76-11,279.25

Finding the Fourth Proportional to 20,231.91, 27,919.76 and 11,279.25

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Solution

The fourth proportional to 20,231.91, 27,919.76 and 11,279.25 is: 15,565.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,231.91 : 27,919.76 = 11,279.25 : x
  2. Step 2: Convert to fraction form
    20,231.91/27,919.76 = 11,279.25/x
  3. Step 3: Cross multiply
    20,231.91x = 27,919.76 × 11,279.25
  4. Step 4: Simplify right side
    20,231.91x = 314,913,896.58
  5. Step 5: Solve for x
    x = 314,913,896.58/20,231.91
  6. Step 6: Final answer
    x = 15,565.21

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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.