Home / 22,138.06-30,760.18-21,906.94

Finding the Fourth Proportional to 22,138.06, 30,760.18 and 21,906.94

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Solution

The fourth proportional to 22,138.06, 30,760.18 and 21,906.94 is: 30,439.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,138.06 : 30,760.18 = 21,906.94 : x
  2. Step 2: Convert to fraction form
    22,138.06/30,760.18 = 21,906.94/x
  3. Step 3: Cross multiply
    22,138.06x = 30,760.18 × 21,906.94
  4. Step 4: Simplify right side
    22,138.06x = 673,861,417.65
  5. Step 5: Solve for x
    x = 673,861,417.65/22,138.06
  6. Step 6: Final answer
    x = 30,439.05

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.