Home / 13,939.58-20,902.64-8,097.86

Finding the Fourth Proportional to 13,939.58, 20,902.64 and 8,097.86

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Solution

The fourth proportional to 13,939.58, 20,902.64 and 8,097.86 is: 12,142.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,939.58 : 20,902.64 = 8,097.86 : x
  2. Step 2: Convert to fraction form
    13,939.58/20,902.64 = 8,097.86/x
  3. Step 3: Cross multiply
    13,939.58x = 20,902.64 × 8,097.86
  4. Step 4: Simplify right side
    13,939.58x = 169,266,568.08
  5. Step 5: Solve for x
    x = 169,266,568.08/13,939.58
  6. Step 6: Final answer
    x = 12,142.88

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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.