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Finding the Fourth Proportional to 12,790.62, 17,650.85 and 7,125.75

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Solution

The fourth proportional to 12,790.62, 17,650.85 and 7,125.75 is: 9,833.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,790.62 : 17,650.85 = 7,125.75 : x
  2. Step 2: Convert to fraction form
    12,790.62/17,650.85 = 7,125.75/x
  3. Step 3: Cross multiply
    12,790.62x = 17,650.85 × 7,125.75
  4. Step 4: Simplify right side
    12,790.62x = 125,775,508.76
  5. Step 5: Solve for x
    x = 125,775,508.76/12,790.62
  6. Step 6: Final answer
    x = 9,833.42

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.