Home / 15,121.77-22,687.26-7,731.42

Finding the Fourth Proportional to 15,121.77, 22,687.26 and 7,731.42

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Solution

The fourth proportional to 15,121.77, 22,687.26 and 7,731.42 is: 11,599.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,121.77 : 22,687.26 = 7,731.42 : x
  2. Step 2: Convert to fraction form
    15,121.77/22,687.26 = 7,731.42/x
  3. Step 3: Cross multiply
    15,121.77x = 22,687.26 × 7,731.42
  4. Step 4: Simplify right side
    15,121.77x = 175,404,650.63
  5. Step 5: Solve for x
    x = 175,404,650.63/15,121.77
  6. Step 6: Final answer
    x = 11,599.48

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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.