Home / 28,811.71-39,759.12-16,874.80

Finding the Fourth Proportional to 28,811.71, 39,759.12 and 16,874.80

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Solution

The fourth proportional to 28,811.71, 39,759.12 and 16,874.80 is: 23,286.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,811.71 : 39,759.12 = 16,874.80 : x
  2. Step 2: Convert to fraction form
    28,811.71/39,759.12 = 16,874.80/x
  3. Step 3: Cross multiply
    28,811.71x = 39,759.12 × 16,874.80
  4. Step 4: Simplify right side
    28,811.71x = 670,927,198.18
  5. Step 5: Solve for x
    x = 670,927,198.18/28,811.71
  6. Step 6: Final answer
    x = 23,286.61

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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.