Home / 18,986.52-28,509-16,925.88

Finding the Fourth Proportional to 18,986.52, 28,509 and 16,925.88

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Solution

The fourth proportional to 18,986.52, 28,509 and 16,925.88 is: 25,414.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,986.52 : 28,509 = 16,925.88 : x
  2. Step 2: Convert to fraction form
    18,986.52/28,509 = 16,925.88/x
  3. Step 3: Cross multiply
    18,986.52x = 28,509 × 16,925.88
  4. Step 4: Simplify right side
    18,986.52x = 482,539,912.92
  5. Step 5: Solve for x
    x = 482,539,912.92/18,986.52
  6. Step 6: Final answer
    x = 25,414.87

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.