Home / 20,134.16-30,190.12-10,785.12

Finding the Fourth Proportional to 20,134.16, 30,190.12 and 10,785.12

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Solution

The fourth proportional to 20,134.16, 30,190.12 and 10,785.12 is: 16,171.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,134.16 : 30,190.12 = 10,785.12 : x
  2. Step 2: Convert to fraction form
    20,134.16/30,190.12 = 10,785.12/x
  3. Step 3: Cross multiply
    20,134.16x = 30,190.12 × 10,785.12
  4. Step 4: Simplify right side
    20,134.16x = 325,604,067.01
  5. Step 5: Solve for x
    x = 325,604,067.01/20,134.16
  6. Step 6: Final answer
    x = 16,171.72

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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.