Home / 20,751.85-31,133.04-5,961.79

Finding the Fourth Proportional to 20,751.85, 31,133.04 and 5,961.79

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Solution

The fourth proportional to 20,751.85, 31,133.04 and 5,961.79 is: 8,944.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,751.85 : 31,133.04 = 5,961.79 : x
  2. Step 2: Convert to fraction form
    20,751.85/31,133.04 = 5,961.79/x
  3. Step 3: Cross multiply
    20,751.85x = 31,133.04 × 5,961.79
  4. Step 4: Simplify right side
    20,751.85x = 185,608,646.54
  5. Step 5: Solve for x
    x = 185,608,646.54/20,751.85
  6. Step 6: Final answer
    x = 8,944.20

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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.