Home / 15,121.62-22,687.05-7,731.27

Finding the Fourth Proportional to 15,121.62, 22,687.05 and 7,731.27

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Solution

The fourth proportional to 15,121.62, 22,687.05 and 7,731.27 is: 11,599.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,121.62 : 22,687.05 = 7,731.27 : x
  2. Step 2: Convert to fraction form
    15,121.62/22,687.05 = 7,731.27/x
  3. Step 3: Cross multiply
    15,121.62x = 22,687.05 × 7,731.27
  4. Step 4: Simplify right side
    15,121.62x = 175,399,769.24
  5. Step 5: Solve for x
    x = 175,399,769.24/15,121.62
  6. Step 6: Final answer
    x = 11,599.27

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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.