Home / 28,517.82-39,354.71-15,942.57

Finding the Fourth Proportional to 28,517.82, 39,354.71 and 15,942.57

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Solution

The fourth proportional to 28,517.82, 39,354.71 and 15,942.57 is: 22,000.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,517.82 : 39,354.71 = 15,942.57 : x
  2. Step 2: Convert to fraction form
    28,517.82/39,354.71 = 15,942.57/x
  3. Step 3: Cross multiply
    28,517.82x = 39,354.71 × 15,942.57
  4. Step 4: Simplify right side
    28,517.82x = 627,415,139.29
  5. Step 5: Solve for x
    x = 627,415,139.29/28,517.82
  6. Step 6: Final answer
    x = 22,000.81

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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.