Home / 13,654.82-20,490.19-5,756.86

Finding the Fourth Proportional to 13,654.82, 20,490.19 and 5,756.86

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Solution

The fourth proportional to 13,654.82, 20,490.19 and 5,756.86 is: 8,638.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,654.82 : 20,490.19 = 5,756.86 : x
  2. Step 2: Convert to fraction form
    13,654.82/20,490.19 = 5,756.86/x
  3. Step 3: Cross multiply
    13,654.82x = 20,490.19 × 5,756.86
  4. Step 4: Simplify right side
    13,654.82x = 117,959,083.55
  5. Step 5: Solve for x
    x = 117,959,083.55/13,654.82
  6. Step 6: Final answer
    x = 8,638.64

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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.