Home / 11,903.67-17,857.32-3,139.26

Finding the Fourth Proportional to 11,903.67, 17,857.32 and 3,139.26

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Solution

The fourth proportional to 11,903.67, 17,857.32 and 3,139.26 is: 4,709.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,903.67 : 17,857.32 = 3,139.26 : x
  2. Step 2: Convert to fraction form
    11,903.67/17,857.32 = 3,139.26/x
  3. Step 3: Cross multiply
    11,903.67x = 17,857.32 × 3,139.26
  4. Step 4: Simplify right side
    11,903.67x = 56,058,770.38
  5. Step 5: Solve for x
    x = 56,058,770.38/11,903.67
  6. Step 6: Final answer
    x = 4,709.37

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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.