Home / 20,780.92-31,174.14-7,633.48

Finding the Fourth Proportional to 20,780.92, 31,174.14 and 7,633.48

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Solution

The fourth proportional to 20,780.92, 31,174.14 and 7,633.48 is: 11,451.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,780.92 : 31,174.14 = 7,633.48 : x
  2. Step 2: Convert to fraction form
    20,780.92/31,174.14 = 7,633.48/x
  3. Step 3: Cross multiply
    20,780.92x = 31,174.14 × 7,633.48
  4. Step 4: Simplify right side
    20,780.92x = 237,967,174.21
  5. Step 5: Solve for x
    x = 237,967,174.21/20,780.92
  6. Step 6: Final answer
    x = 11,451.23

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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.