Home / 20,160.83-27,822.87-11,209.25

Finding the Fourth Proportional to 20,160.83, 27,822.87 and 11,209.25

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Solution

The fourth proportional to 20,160.83, 27,822.87 and 11,209.25 is: 15,469.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,160.83 : 27,822.87 = 11,209.25 : x
  2. Step 2: Convert to fraction form
    20,160.83/27,822.87 = 11,209.25/x
  3. Step 3: Cross multiply
    20,160.83x = 27,822.87 × 11,209.25
  4. Step 4: Simplify right side
    20,160.83x = 311,873,505.55
  5. Step 5: Solve for x
    x = 311,873,505.55/20,160.83
  6. Step 6: Final answer
    x = 15,469.28

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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.