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Finding the Fourth Proportional to 15,992.38, 23,990.22 and 6,139.90

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Solution

The fourth proportional to 15,992.38, 23,990.22 and 6,139.90 is: 9,210.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,992.38 : 23,990.22 = 6,139.90 : x
  2. Step 2: Convert to fraction form
    15,992.38/23,990.22 = 6,139.90/x
  3. Step 3: Cross multiply
    15,992.38x = 23,990.22 × 6,139.90
  4. Step 4: Simplify right side
    15,992.38x = 147,297,551.78
  5. Step 5: Solve for x
    x = 147,297,551.78/15,992.38
  6. Step 6: Final answer
    x = 9,210.48

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.