Home / 28,408.54-39,205.12-15,833.38

Finding the Fourth Proportional to 28,408.54, 39,205.12 and 15,833.38

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Solution

The fourth proportional to 28,408.54, 39,205.12 and 15,833.38 is: 21,850.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,408.54 : 39,205.12 = 15,833.38 : x
  2. Step 2: Convert to fraction form
    28,408.54/39,205.12 = 15,833.38/x
  3. Step 3: Cross multiply
    28,408.54x = 39,205.12 × 15,833.38
  4. Step 4: Simplify right side
    28,408.54x = 620,749,562.91
  5. Step 5: Solve for x
    x = 620,749,562.91/28,408.54
  6. Step 6: Final answer
    x = 21,850.81

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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.