Home / 20,827.58-28,742.82-11,874.98

Finding the Fourth Proportional to 20,827.58, 28,742.82 and 11,874.98

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Solution

The fourth proportional to 20,827.58, 28,742.82 and 11,874.98 is: 16,387.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,827.58 : 28,742.82 = 11,874.98 : x
  2. Step 2: Convert to fraction form
    20,827.58/28,742.82 = 11,874.98/x
  3. Step 3: Cross multiply
    20,827.58x = 28,742.82 × 11,874.98
  4. Step 4: Simplify right side
    20,827.58x = 341,320,439.97
  5. Step 5: Solve for x
    x = 341,320,439.97/20,827.58
  6. Step 6: Final answer
    x = 16,387.91

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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.