Home / 13,721.77-18,936.41-7,753.31

Finding the Fourth Proportional to 13,721.77, 18,936.41 and 7,753.31

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Solution

The fourth proportional to 13,721.77, 18,936.41 and 7,753.31 is: 10,699.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,721.77 : 18,936.41 = 7,753.31 : x
  2. Step 2: Convert to fraction form
    13,721.77/18,936.41 = 7,753.31/x
  3. Step 3: Cross multiply
    13,721.77x = 18,936.41 × 7,753.31
  4. Step 4: Simplify right side
    13,721.77x = 146,819,857.02
  5. Step 5: Solve for x
    x = 146,819,857.02/13,721.77
  6. Step 6: Final answer
    x = 10,699.78

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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.