Home / 28,660.62-39,552.89-15,913.80

Finding the Fourth Proportional to 28,660.62, 39,552.89 and 15,913.80

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Solution

The fourth proportional to 28,660.62, 39,552.89 and 15,913.80 is: 21,961.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,660.62 : 39,552.89 = 15,913.80 : x
  2. Step 2: Convert to fraction form
    28,660.62/39,552.89 = 15,913.80/x
  3. Step 3: Cross multiply
    28,660.62x = 39,552.89 × 15,913.80
  4. Step 4: Simplify right side
    28,660.62x = 629,436,780.88
  5. Step 5: Solve for x
    x = 629,436,780.88/28,660.62
  6. Step 6: Final answer
    x = 21,961.73

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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.