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Finding the Fourth Proportional to 19,071.45, 28,589.76 and 7,375.86

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Solution

The fourth proportional to 19,071.45, 28,589.76 and 7,375.86 is: 11,057.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,071.45 : 28,589.76 = 7,375.86 : x
  2. Step 2: Convert to fraction form
    19,071.45/28,589.76 = 7,375.86/x
  3. Step 3: Cross multiply
    19,071.45x = 28,589.76 × 7,375.86
  4. Step 4: Simplify right side
    19,071.45x = 210,874,067.19
  5. Step 5: Solve for x
    x = 210,874,067.19/19,071.45
  6. Step 6: Final answer
    x = 11,057.05

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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.