Home / 20,141.38-30,230.88-10,287.73

Finding the Fourth Proportional to 20,141.38, 30,230.88 and 10,287.73

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Solution

The fourth proportional to 20,141.38, 30,230.88 and 10,287.73 is: 15,441.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,141.38 : 30,230.88 = 10,287.73 : x
  2. Step 2: Convert to fraction form
    20,141.38/30,230.88 = 10,287.73/x
  3. Step 3: Cross multiply
    20,141.38x = 30,230.88 × 10,287.73
  4. Step 4: Simplify right side
    20,141.38x = 311,007,131.10
  5. Step 5: Solve for x
    x = 311,007,131.10/20,141.38
  6. Step 6: Final answer
    x = 15,441.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.