Home / 20,144.43-27,799.80-11,192.31

Finding the Fourth Proportional to 20,144.43, 27,799.80 and 11,192.31

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Solution

The fourth proportional to 20,144.43, 27,799.80 and 11,192.31 is: 15,445.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,144.43 : 27,799.80 = 11,192.31 : x
  2. Step 2: Convert to fraction form
    20,144.43/27,799.80 = 11,192.31/x
  3. Step 3: Cross multiply
    20,144.43x = 27,799.80 × 11,192.31
  4. Step 4: Simplify right side
    20,144.43x = 311,143,979.54
  5. Step 5: Solve for x
    x = 311,143,979.54/20,144.43
  6. Step 6: Final answer
    x = 15,445.66

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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.