Home / 20,825.28-31,234.41-8,975.79

Finding the Fourth Proportional to 20,825.28, 31,234.41 and 8,975.79

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Solution

The fourth proportional to 20,825.28, 31,234.41 and 8,975.79 is: 13,462.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,825.28 : 31,234.41 = 8,975.79 : x
  2. Step 2: Convert to fraction form
    20,825.28/31,234.41 = 8,975.79/x
  3. Step 3: Cross multiply
    20,825.28x = 31,234.41 × 8,975.79
  4. Step 4: Simplify right side
    20,825.28x = 280,353,504.93
  5. Step 5: Solve for x
    x = 280,353,504.93/20,825.28
  6. Step 6: Final answer
    x = 13,462.17

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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.