Home / 11,817.76-17,729.70-5,242.36

Finding the Fourth Proportional to 11,817.76, 17,729.70 and 5,242.36

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Solution

The fourth proportional to 11,817.76, 17,729.70 and 5,242.36 is: 7,864.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,817.76 : 17,729.70 = 5,242.36 : x
  2. Step 2: Convert to fraction form
    11,817.76/17,729.70 = 5,242.36/x
  3. Step 3: Cross multiply
    11,817.76x = 17,729.70 × 5,242.36
  4. Step 4: Simplify right side
    11,817.76x = 92,945,470.09
  5. Step 5: Solve for x
    x = 92,945,470.09/11,817.76
  6. Step 6: Final answer
    x = 7,864.90

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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.