Home / 16,890.14-25,334.49-5,645.90

Finding the Fourth Proportional to 16,890.14, 25,334.49 and 5,645.90

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Solution

The fourth proportional to 16,890.14, 25,334.49 and 5,645.90 is: 8,468.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,890.14 : 25,334.49 = 5,645.90 : x
  2. Step 2: Convert to fraction form
    16,890.14/25,334.49 = 5,645.90/x
  3. Step 3: Cross multiply
    16,890.14x = 25,334.49 × 5,645.90
  4. Step 4: Simplify right side
    16,890.14x = 143,035,997.09
  5. Step 5: Solve for x
    x = 143,035,997.09/16,890.14
  6. Step 6: Final answer
    x = 8,468.61

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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.