Home / 20,786.92-31,162.56-7,632.52

Finding the Fourth Proportional to 20,786.92, 31,162.56 and 7,632.52

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Solution

The fourth proportional to 20,786.92, 31,162.56 and 7,632.52 is: 11,442.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,786.92 : 31,162.56 = 7,632.52 : x
  2. Step 2: Convert to fraction form
    20,786.92/31,162.56 = 7,632.52/x
  3. Step 3: Cross multiply
    20,786.92x = 31,162.56 × 7,632.52
  4. Step 4: Simplify right side
    20,786.92x = 237,848,862.45
  5. Step 5: Solve for x
    x = 237,848,862.45/20,786.92
  6. Step 6: Final answer
    x = 11,442.24

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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.