Home / 28,556.94-39,408.66-15,981.69

Finding the Fourth Proportional to 28,556.94, 39,408.66 and 15,981.69

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Solution

The fourth proportional to 28,556.94, 39,408.66 and 15,981.69 is: 22,054.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,556.94 : 39,408.66 = 15,981.69 : x
  2. Step 2: Convert to fraction form
    28,556.94/39,408.66 = 15,981.69/x
  3. Step 3: Cross multiply
    28,556.94x = 39,408.66 × 15,981.69
  4. Step 4: Simplify right side
    28,556.94x = 629,816,987.44
  5. Step 5: Solve for x
    x = 629,816,987.44/28,556.94
  6. Step 6: Final answer
    x = 22,054.78

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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.