Home / 12,707.28-19,062.68-3,942.88

Finding the Fourth Proportional to 12,707.28, 19,062.68 and 3,942.88

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Solution

The fourth proportional to 12,707.28, 19,062.68 and 3,942.88 is: 5,914.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,707.28 : 19,062.68 = 3,942.88 : x
  2. Step 2: Convert to fraction form
    12,707.28/19,062.68 = 3,942.88/x
  3. Step 3: Cross multiply
    12,707.28x = 19,062.68 × 3,942.88
  4. Step 4: Simplify right side
    12,707.28x = 75,161,859.72
  5. Step 5: Solve for x
    x = 75,161,859.72/12,707.28
  6. Step 6: Final answer
    x = 5,914.87

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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.