Home / 20,190.55-27,863.13-11,238.43

Finding the Fourth Proportional to 20,190.55, 27,863.13 and 11,238.43

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Solution

The fourth proportional to 20,190.55, 27,863.13 and 11,238.43 is: 15,509.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,190.55 : 27,863.13 = 11,238.43 : x
  2. Step 2: Convert to fraction form
    20,190.55/27,863.13 = 11,238.43/x
  3. Step 3: Cross multiply
    20,190.55x = 27,863.13 × 11,238.43
  4. Step 4: Simplify right side
    20,190.55x = 313,137,836.09
  5. Step 5: Solve for x
    x = 313,137,836.09/20,190.55
  6. Step 6: Final answer
    x = 15,509.13

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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.