Home / 20,239.49-27,930.86-11,286.03

Finding the Fourth Proportional to 20,239.49, 27,930.86 and 11,286.03

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Solution

The fourth proportional to 20,239.49, 27,930.86 and 11,286.03 is: 15,574.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,239.49 : 27,930.86 = 11,286.03 : x
  2. Step 2: Convert to fraction form
    20,239.49/27,930.86 = 11,286.03/x
  3. Step 3: Cross multiply
    20,239.49x = 27,930.86 × 11,286.03
  4. Step 4: Simplify right side
    20,239.49x = 315,228,614.52
  5. Step 5: Solve for x
    x = 315,228,614.52/20,239.49
  6. Step 6: Final answer
    x = 15,574.93

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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.