Home / 20,238.24-27,928.93-11,286.32

Finding the Fourth Proportional to 20,238.24, 27,928.93 and 11,286.32

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Solution

The fourth proportional to 20,238.24, 27,928.93 and 11,286.32 is: 15,575.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,238.24 : 27,928.93 = 11,286.32 : x
  2. Step 2: Convert to fraction form
    20,238.24/27,928.93 = 11,286.32/x
  3. Step 3: Cross multiply
    20,238.24x = 27,928.93 × 11,286.32
  4. Step 4: Simplify right side
    20,238.24x = 315,214,841.24
  5. Step 5: Solve for x
    x = 315,214,841.24/20,238.24
  6. Step 6: Final answer
    x = 15,575.21

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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.