Home / 20,851.52-31,273.97-6,811.43

Finding the Fourth Proportional to 20,851.52, 31,273.97 and 6,811.43

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Solution

The fourth proportional to 20,851.52, 31,273.97 and 6,811.43 is: 10,216.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,851.52 : 31,273.97 = 6,811.43 : x
  2. Step 2: Convert to fraction form
    20,851.52/31,273.97 = 6,811.43/x
  3. Step 3: Cross multiply
    20,851.52x = 31,273.97 × 6,811.43
  4. Step 4: Simplify right side
    20,851.52x = 213,020,267.05
  5. Step 5: Solve for x
    x = 213,020,267.05/20,851.52
  6. Step 6: Final answer
    x = 10,216.06

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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.