Home / 28,791.66-39,718.47-18,579.90

Finding the Fourth Proportional to 28,791.66, 39,718.47 and 18,579.90

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Solution

The fourth proportional to 28,791.66, 39,718.47 and 18,579.90 is: 25,631.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,791.66 : 39,718.47 = 18,579.90 : x
  2. Step 2: Convert to fraction form
    28,791.66/39,718.47 = 18,579.90/x
  3. Step 3: Cross multiply
    28,791.66x = 39,718.47 × 18,579.90
  4. Step 4: Simplify right side
    28,791.66x = 737,965,200.75
  5. Step 5: Solve for x
    x = 737,965,200.75/28,791.66
  6. Step 6: Final answer
    x = 25,631.21

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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.