Home / 20,287.36-27,991.44-11,902.24

Finding the Fourth Proportional to 20,287.36, 27,991.44 and 11,902.24

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Solution

The fourth proportional to 20,287.36, 27,991.44 and 11,902.24 is: 16,422.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,287.36 : 27,991.44 = 11,902.24 : x
  2. Step 2: Convert to fraction form
    20,287.36/27,991.44 = 11,902.24/x
  3. Step 3: Cross multiply
    20,287.36x = 27,991.44 × 11,902.24
  4. Step 4: Simplify right side
    20,287.36x = 333,160,836.83
  5. Step 5: Solve for x
    x = 333,160,836.83/20,287.36
  6. Step 6: Final answer
    x = 16,422.09

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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.