Home / 28,850.87-39,789.27-18,775.68

Finding the Fourth Proportional to 28,850.87, 39,789.27 and 18,775.68

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Solution

The fourth proportional to 28,850.87, 39,789.27 and 18,775.68 is: 25,894.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,850.87 : 39,789.27 = 18,775.68 : x
  2. Step 2: Convert to fraction form
    28,850.87/39,789.27 = 18,775.68/x
  3. Step 3: Cross multiply
    28,850.87x = 39,789.27 × 18,775.68
  4. Step 4: Simplify right side
    28,850.87x = 747,070,600.95
  5. Step 5: Solve for x
    x = 747,070,600.95/28,850.87
  6. Step 6: Final answer
    x = 25,894.22

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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.