Home / 28,721.25-39,635.39-16,791.17

Finding the Fourth Proportional to 28,721.25, 39,635.39 and 16,791.17

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Solution

The fourth proportional to 28,721.25, 39,635.39 and 16,791.17 is: 23,171.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,721.25 : 39,635.39 = 16,791.17 : x
  2. Step 2: Convert to fraction form
    28,721.25/39,635.39 = 16,791.17/x
  3. Step 3: Cross multiply
    28,721.25x = 39,635.39 × 16,791.17
  4. Step 4: Simplify right side
    28,721.25x = 665,524,415.31
  5. Step 5: Solve for x
    x = 665,524,415.31/28,721.25
  6. Step 6: Final answer
    x = 23,171.85

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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.