Home / 11,939.20-17,905.05-4,339.51

Finding the Fourth Proportional to 11,939.20, 17,905.05 and 4,339.51

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Solution

The fourth proportional to 11,939.20, 17,905.05 and 4,339.51 is: 6,507.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,939.20 : 17,905.05 = 4,339.51 : x
  2. Step 2: Convert to fraction form
    11,939.20/17,905.05 = 4,339.51/x
  3. Step 3: Cross multiply
    11,939.20x = 17,905.05 × 4,339.51
  4. Step 4: Simplify right side
    11,939.20x = 77,699,098.76
  5. Step 5: Solve for x
    x = 77,699,098.76/11,939.20
  6. Step 6: Final answer
    x = 6,507.90

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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.