Home / 20,147.28-27,803.56-11,195.62

Finding the Fourth Proportional to 20,147.28, 27,803.56 and 11,195.62

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Solution

The fourth proportional to 20,147.28, 27,803.56 and 11,195.62 is: 15,450.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,147.28 : 27,803.56 = 11,195.62 : x
  2. Step 2: Convert to fraction form
    20,147.28/27,803.56 = 11,195.62/x
  3. Step 3: Cross multiply
    20,147.28x = 27,803.56 × 11,195.62
  4. Step 4: Simplify right side
    20,147.28x = 311,278,092.41
  5. Step 5: Solve for x
    x = 311,278,092.41/20,147.28
  6. Step 6: Final answer
    x = 15,450.13

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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.