Home / 20,321.97-28,043.01-11,367.93

Finding the Fourth Proportional to 20,321.97, 28,043.01 and 11,367.93

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Solution

The fourth proportional to 20,321.97, 28,043.01 and 11,367.93 is: 15,687.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,321.97 : 28,043.01 = 11,367.93 : x
  2. Step 2: Convert to fraction form
    20,321.97/28,043.01 = 11,367.93/x
  3. Step 3: Cross multiply
    20,321.97x = 28,043.01 × 11,367.93
  4. Step 4: Simplify right side
    20,321.97x = 318,790,974.67
  5. Step 5: Solve for x
    x = 318,790,974.67/20,321.97
  6. Step 6: Final answer
    x = 15,687.01

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.