Home / 20,219.52-27,905.36-11,836

Finding the Fourth Proportional to 20,219.52, 27,905.36 and 11,836

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Solution

The fourth proportional to 20,219.52, 27,905.36 and 11,836 is: 16,335.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,219.52 : 27,905.36 = 11,836 : x
  2. Step 2: Convert to fraction form
    20,219.52/27,905.36 = 11,836/x
  3. Step 3: Cross multiply
    20,219.52x = 27,905.36 × 11,836
  4. Step 4: Simplify right side
    20,219.52x = 330,287,840.96
  5. Step 5: Solve for x
    x = 330,287,840.96/20,219.52
  6. Step 6: Final answer
    x = 16,335.10

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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.