Home / 20,375.06-30,583.20-10,521.38

Finding the Fourth Proportional to 20,375.06, 30,583.20 and 10,521.38

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Solution

The fourth proportional to 20,375.06, 30,583.20 and 10,521.38 is: 15,792.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,375.06 : 30,583.20 = 10,521.38 : x
  2. Step 2: Convert to fraction form
    20,375.06/30,583.20 = 10,521.38/x
  3. Step 3: Cross multiply
    20,375.06x = 30,583.20 × 10,521.38
  4. Step 4: Simplify right side
    20,375.06x = 321,777,468.82
  5. Step 5: Solve for x
    x = 321,777,468.82/20,375.06
  6. Step 6: Final answer
    x = 15,792.71

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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.