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Finding the Fourth Proportional to 28,610.85, 42,919.04 and 8,884.11

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Solution

The fourth proportional to 28,610.85, 42,919.04 and 8,884.11 is: 13,327.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,610.85 : 42,919.04 = 8,884.11 : x
  2. Step 2: Convert to fraction form
    28,610.85/42,919.04 = 8,884.11/x
  3. Step 3: Cross multiply
    28,610.85x = 42,919.04 × 8,884.11
  4. Step 4: Simplify right side
    28,610.85x = 381,297,428.03
  5. Step 5: Solve for x
    x = 381,297,428.03/28,610.85
  6. Step 6: Final answer
    x = 13,327.02

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Why These Related Problems?

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