Home / 20,234.88-27,936-12,792.96

Finding the Fourth Proportional to 20,234.88, 27,936 and 12,792.96

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Solution

The fourth proportional to 20,234.88, 27,936 and 12,792.96 is: 17,661.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,234.88 : 27,936 = 12,792.96 : x
  2. Step 2: Convert to fraction form
    20,234.88/27,936 = 12,792.96/x
  3. Step 3: Cross multiply
    20,234.88x = 27,936 × 12,792.96
  4. Step 4: Simplify right side
    20,234.88x = 357,384,130.56
  5. Step 5: Solve for x
    x = 357,384,130.56/20,234.88
  6. Step 6: Final answer
    x = 17,661.79

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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.