Home / 20,121.62-27,771.37-11,624.06

Finding the Fourth Proportional to 20,121.62, 27,771.37 and 11,624.06

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Solution

The fourth proportional to 20,121.62, 27,771.37 and 11,624.06 is: 16,043.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,121.62 : 27,771.37 = 11,624.06 : x
  2. Step 2: Convert to fraction form
    20,121.62/27,771.37 = 11,624.06/x
  3. Step 3: Cross multiply
    20,121.62x = 27,771.37 × 11,624.06
  4. Step 4: Simplify right side
    20,121.62x = 322,815,971.66
  5. Step 5: Solve for x
    x = 322,815,971.66/20,121.62
  6. Step 6: Final answer
    x = 16,043.24

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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.