Home / 20,238.22-27,928.10-11,039.42

Finding the Fourth Proportional to 20,238.22, 27,928.10 and 11,039.42

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Solution

The fourth proportional to 20,238.22, 27,928.10 and 11,039.42 is: 15,234.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,238.22 : 27,928.10 = 11,039.42 : x
  2. Step 2: Convert to fraction form
    20,238.22/27,928.10 = 11,039.42/x
  3. Step 3: Cross multiply
    20,238.22x = 27,928.10 × 11,039.42
  4. Step 4: Simplify right side
    20,238.22x = 308,310,123.12
  5. Step 5: Solve for x
    x = 308,310,123.12/20,238.22
  6. Step 6: Final answer
    x = 15,234.05

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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.