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Finding the Fourth Proportional to 11,935.92, 17,903.90 and 4,139.25

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Solution

The fourth proportional to 11,935.92, 17,903.90 and 4,139.25 is: 6,208.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,935.92 : 17,903.90 = 4,139.25 : x
  2. Step 2: Convert to fraction form
    11,935.92/17,903.90 = 4,139.25/x
  3. Step 3: Cross multiply
    11,935.92x = 17,903.90 × 4,139.25
  4. Step 4: Simplify right side
    11,935.92x = 74,108,697.38
  5. Step 5: Solve for x
    x = 74,108,697.38/11,935.92
  6. Step 6: Final answer
    x = 6,208.88

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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.