Home / 20,148.62-27,803.79-11,195.55

Finding the Fourth Proportional to 20,148.62, 27,803.79 and 11,195.55

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Solution

The fourth proportional to 20,148.62, 27,803.79 and 11,195.55 is: 15,449.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,148.62 : 27,803.79 = 11,195.55 : x
  2. Step 2: Convert to fraction form
    20,148.62/27,803.79 = 11,195.55/x
  3. Step 3: Cross multiply
    20,148.62x = 27,803.79 × 11,195.55
  4. Step 4: Simplify right side
    20,148.62x = 311,278,721.13
  5. Step 5: Solve for x
    x = 311,278,721.13/20,148.62
  6. Step 6: Final answer
    x = 15,449.14

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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.