Home / 13,721.82-18,936.49-7,753.37

Finding the Fourth Proportional to 13,721.82, 18,936.49 and 7,753.37

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Solution

The fourth proportional to 13,721.82, 18,936.49 and 7,753.37 is: 10,699.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,721.82 : 18,936.49 = 7,753.37 : x
  2. Step 2: Convert to fraction form
    13,721.82/18,936.49 = 7,753.37/x
  3. Step 3: Cross multiply
    13,721.82x = 18,936.49 × 7,753.37
  4. Step 4: Simplify right side
    13,721.82x = 146,821,613.47
  5. Step 5: Solve for x
    x = 146,821,613.47/13,721.82
  6. Step 6: Final answer
    x = 10,699.86

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.