Home / 28,691.97-39,594.77-15,771.54

Finding the Fourth Proportional to 28,691.97, 39,594.77 and 15,771.54

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Solution

The fourth proportional to 28,691.97, 39,594.77 and 15,771.54 is: 21,764.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,691.97 : 39,594.77 = 15,771.54 : x
  2. Step 2: Convert to fraction form
    28,691.97/39,594.77 = 15,771.54/x
  3. Step 3: Cross multiply
    28,691.97x = 39,594.77 × 15,771.54
  4. Step 4: Simplify right side
    28,691.97x = 624,470,419.99
  5. Step 5: Solve for x
    x = 624,470,419.99/28,691.97
  6. Step 6: Final answer
    x = 21,764.64

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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.