Home / 20,861.24-28,787.96-11,662.88

Finding the Fourth Proportional to 20,861.24, 28,787.96 and 11,662.88

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Solution

The fourth proportional to 20,861.24, 28,787.96 and 11,662.88 is: 16,094.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,861.24 : 28,787.96 = 11,662.88 : x
  2. Step 2: Convert to fraction form
    20,861.24/28,787.96 = 11,662.88/x
  3. Step 3: Cross multiply
    20,861.24x = 28,787.96 × 11,662.88
  4. Step 4: Simplify right side
    20,861.24x = 335,750,408.14
  5. Step 5: Solve for x
    x = 335,750,408.14/20,861.24
  6. Step 6: Final answer
    x = 16,094.46

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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.