Home / 17,961.53-26,928.86-12,398.99

Finding the Fourth Proportional to 17,961.53, 26,928.86 and 12,398.99

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Solution

The fourth proportional to 17,961.53, 26,928.86 and 12,398.99 is: 18,589.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,961.53 : 26,928.86 = 12,398.99 : x
  2. Step 2: Convert to fraction form
    17,961.53/26,928.86 = 12,398.99/x
  3. Step 3: Cross multiply
    17,961.53x = 26,928.86 × 12,398.99
  4. Step 4: Simplify right side
    17,961.53x = 333,890,469.21
  5. Step 5: Solve for x
    x = 333,890,469.21/17,961.53
  6. Step 6: Final answer
    x = 18,589.20

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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.