Home / 11,939.32-17,905.74-4,143.88

Finding the Fourth Proportional to 11,939.32, 17,905.74 and 4,143.88

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Solution

The fourth proportional to 11,939.32, 17,905.74 and 4,143.88 is: 6,214.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,939.32 : 17,905.74 = 4,143.88 : x
  2. Step 2: Convert to fraction form
    11,939.32/17,905.74 = 4,143.88/x
  3. Step 3: Cross multiply
    11,939.32x = 17,905.74 × 4,143.88
  4. Step 4: Simplify right side
    11,939.32x = 74,199,237.87
  5. Step 5: Solve for x
    x = 74,199,237.87/11,939.32
  6. Step 6: Final answer
    x = 6,214.70

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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.