Home / 20,175.05-27,839.42-11,221.12

Finding the Fourth Proportional to 20,175.05, 27,839.42 and 11,221.12

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Solution

The fourth proportional to 20,175.05, 27,839.42 and 11,221.12 is: 15,483.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,175.05 : 27,839.42 = 11,221.12 : x
  2. Step 2: Convert to fraction form
    20,175.05/27,839.42 = 11,221.12/x
  3. Step 3: Cross multiply
    20,175.05x = 27,839.42 × 11,221.12
  4. Step 4: Simplify right side
    20,175.05x = 312,389,277.25
  5. Step 5: Solve for x
    x = 312,389,277.25/20,175.05
  6. Step 6: Final answer
    x = 15,483.94

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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.