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Finding the Fourth Proportional to 10,879.03, 15,027.15 and 8,998.21

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Solution

The fourth proportional to 10,879.03, 15,027.15 and 8,998.21 is: 12,429.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,879.03 : 15,027.15 = 8,998.21 : x
  2. Step 2: Convert to fraction form
    10,879.03/15,027.15 = 8,998.21/x
  3. Step 3: Cross multiply
    10,879.03x = 15,027.15 × 8,998.21
  4. Step 4: Simplify right side
    10,879.03x = 135,217,451.40
  5. Step 5: Solve for x
    x = 135,217,451.40/10,879.03
  6. Step 6: Final answer
    x = 12,429.18

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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.