Home / 20,286.90-27,995.82-11,334.42

Finding the Fourth Proportional to 20,286.90, 27,995.82 and 11,334.42

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Solution

The fourth proportional to 20,286.90, 27,995.82 and 11,334.42 is: 15,641.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,286.90 : 27,995.82 = 11,334.42 : x
  2. Step 2: Convert to fraction form
    20,286.90/27,995.82 = 11,334.42/x
  3. Step 3: Cross multiply
    20,286.90x = 27,995.82 × 11,334.42
  4. Step 4: Simplify right side
    20,286.90x = 317,316,382.12
  5. Step 5: Solve for x
    x = 317,316,382.12/20,286.90
  6. Step 6: Final answer
    x = 15,641.44

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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.