Home / 20,221.62-27,906.65-11,269.05

Finding the Fourth Proportional to 20,221.62, 27,906.65 and 11,269.05

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Solution

The fourth proportional to 20,221.62, 27,906.65 and 11,269.05 is: 15,551.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,221.62 : 27,906.65 = 11,269.05 : x
  2. Step 2: Convert to fraction form
    20,221.62/27,906.65 = 11,269.05/x
  3. Step 3: Cross multiply
    20,221.62x = 27,906.65 × 11,269.05
  4. Step 4: Simplify right side
    20,221.62x = 314,481,425.63
  5. Step 5: Solve for x
    x = 314,481,425.63/20,221.62
  6. Step 6: Final answer
    x = 15,551.74

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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.