Home / 20,143.43-27,798.42-11,191.31

Finding the Fourth Proportional to 20,143.43, 27,798.42 and 11,191.31

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Solution

The fourth proportional to 20,143.43, 27,798.42 and 11,191.31 is: 15,444.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,143.43 : 27,798.42 = 11,191.31 : x
  2. Step 2: Convert to fraction form
    20,143.43/27,798.42 = 11,191.31/x
  3. Step 3: Cross multiply
    20,143.43x = 27,798.42 × 11,191.31
  4. Step 4: Simplify right side
    20,143.43x = 311,100,540.78
  5. Step 5: Solve for x
    x = 311,100,540.78/20,143.43
  6. Step 6: Final answer
    x = 15,444.27

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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.