Home / 13,872.86-20,787.36-11,263.04

Finding the Fourth Proportional to 13,872.86, 20,787.36 and 11,263.04

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Solution

The fourth proportional to 13,872.86, 20,787.36 and 11,263.04 is: 16,876.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,872.86 : 20,787.36 = 11,263.04 : x
  2. Step 2: Convert to fraction form
    13,872.86/20,787.36 = 11,263.04/x
  3. Step 3: Cross multiply
    13,872.86x = 20,787.36 × 11,263.04
  4. Step 4: Simplify right side
    13,872.86x = 234,128,867.17
  5. Step 5: Solve for x
    x = 234,128,867.17/13,872.86
  6. Step 6: Final answer
    x = 16,876.76

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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.