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Finding the Fourth Proportional to 19,026.72, 28,540.44 and 5,175.72

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Solution

The fourth proportional to 19,026.72, 28,540.44 and 5,175.72 is: 7,763.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,026.72 : 28,540.44 = 5,175.72 : x
  2. Step 2: Convert to fraction form
    19,026.72/28,540.44 = 5,175.72/x
  3. Step 3: Cross multiply
    19,026.72x = 28,540.44 × 5,175.72
  4. Step 4: Simplify right side
    19,026.72x = 147,717,326.12
  5. Step 5: Solve for x
    x = 147,717,326.12/19,026.72
  6. Step 6: Final answer
    x = 7,763.68

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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.