Home / 20,939.00-31,408.24-6,147.39

Finding the Fourth Proportional to 20,939.00, 31,408.24 and 6,147.39

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Solution

The fourth proportional to 20,939.00, 31,408.24 and 6,147.39 is: 9,221.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,939.00 : 31,408.24 = 6,147.39 : x
  2. Step 2: Convert to fraction form
    20,939.00/31,408.24 = 6,147.39/x
  3. Step 3: Cross multiply
    20,939.00x = 31,408.24 × 6,147.39
  4. Step 4: Simplify right side
    20,939.00x = 193,078,590.40
  5. Step 5: Solve for x
    x = 193,078,590.40/20,939.00
  6. Step 6: Final answer
    x = 9,221.00

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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.