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Finding the Fourth Proportional to 11,589.80, 17,392.80 and 5,020.70

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Solution

The fourth proportional to 11,589.80, 17,392.80 and 5,020.70 is: 7,534.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,589.80 : 17,392.80 = 5,020.70 : x
  2. Step 2: Convert to fraction form
    11,589.80/17,392.80 = 5,020.70/x
  3. Step 3: Cross multiply
    11,589.80x = 17,392.80 × 5,020.70
  4. Step 4: Simplify right side
    11,589.80x = 87,324,030.96
  5. Step 5: Solve for x
    x = 87,324,030.96/11,589.80
  6. Step 6: Final answer
    x = 7,534.56

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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.