Home / 13,722-18,939.11-7,753.74

Finding the Fourth Proportional to 13,722, 18,939.11 and 7,753.74

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Solution

The fourth proportional to 13,722, 18,939.11 and 7,753.74 is: 10,701.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,722 : 18,939.11 = 7,753.74 : x
  2. Step 2: Convert to fraction form
    13,722/18,939.11 = 7,753.74/x
  3. Step 3: Cross multiply
    13,722x = 18,939.11 × 7,753.74
  4. Step 4: Simplify right side
    13,722x = 146,848,896.00
  5. Step 5: Solve for x
    x = 146,848,896.00/13,722
  6. Step 6: Final answer
    x = 10,701.71

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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.