Home / 28,469.20-39,286.68-15,893.68

Finding the Fourth Proportional to 28,469.20, 39,286.68 and 15,893.68

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Solution

The fourth proportional to 28,469.20, 39,286.68 and 15,893.68 is: 21,932.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,469.20 : 39,286.68 = 15,893.68 : x
  2. Step 2: Convert to fraction form
    28,469.20/39,286.68 = 15,893.68/x
  3. Step 3: Cross multiply
    28,469.20x = 39,286.68 × 15,893.68
  4. Step 4: Simplify right side
    28,469.20x = 624,409,920.18
  5. Step 5: Solve for x
    x = 624,409,920.18/28,469.20
  6. Step 6: Final answer
    x = 21,932.82

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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.