Home / 20,219.50-27,902.91-11,836

Finding the Fourth Proportional to 20,219.50, 27,902.91 and 11,836

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Solution

The fourth proportional to 20,219.50, 27,902.91 and 11,836 is: 16,333.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,219.50 : 27,902.91 = 11,836 : x
  2. Step 2: Convert to fraction form
    20,219.50/27,902.91 = 11,836/x
  3. Step 3: Cross multiply
    20,219.50x = 27,902.91 × 11,836
  4. Step 4: Simplify right side
    20,219.50x = 330,258,842.76
  5. Step 5: Solve for x
    x = 330,258,842.76/20,219.50
  6. Step 6: Final answer
    x = 16,333.68

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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.