Home / 13,776.12-20,672.19-5,456.97

Finding the Fourth Proportional to 13,776.12, 20,672.19 and 5,456.97

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Solution

The fourth proportional to 13,776.12, 20,672.19 and 5,456.97 is: 8,188.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,776.12 : 20,672.19 = 5,456.97 : x
  2. Step 2: Convert to fraction form
    13,776.12/20,672.19 = 5,456.97/x
  3. Step 3: Cross multiply
    13,776.12x = 20,672.19 × 5,456.97
  4. Step 4: Simplify right side
    13,776.12x = 112,807,520.66
  5. Step 5: Solve for x
    x = 112,807,520.66/13,776.12
  6. Step 6: Final answer
    x = 8,188.63

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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.