Home / 20,231.14-27,919.09-11,279.21

Finding the Fourth Proportional to 20,231.14, 27,919.09 and 11,279.21

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Solution

The fourth proportional to 20,231.14, 27,919.09 and 11,279.21 is: 15,565.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,231.14 : 27,919.09 = 11,279.21 : x
  2. Step 2: Convert to fraction form
    20,231.14/27,919.09 = 11,279.21/x
  3. Step 3: Cross multiply
    20,231.14x = 27,919.09 × 11,279.21
  4. Step 4: Simplify right side
    20,231.14x = 314,905,342.39
  5. Step 5: Solve for x
    x = 314,905,342.39/20,231.14
  6. Step 6: Final answer
    x = 15,565.38

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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.