Home / 20,286.08-27,995.52-11,905.28

Finding the Fourth Proportional to 20,286.08, 27,995.52 and 11,905.28

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Solution

The fourth proportional to 20,286.08, 27,995.52 and 11,905.28 is: 16,429.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,286.08 : 27,995.52 = 11,905.28 : x
  2. Step 2: Convert to fraction form
    20,286.08/27,995.52 = 11,905.28/x
  3. Step 3: Cross multiply
    20,286.08x = 27,995.52 × 11,905.28
  4. Step 4: Simplify right side
    20,286.08x = 333,294,504.35
  5. Step 5: Solve for x
    x = 333,294,504.35/20,286.08
  6. Step 6: Final answer
    x = 16,429.71

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Similar ratio
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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.