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Finding the Fourth Proportional to 11,380.36, 17,070.54 and 3,589.78

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Solution

The fourth proportional to 11,380.36, 17,070.54 and 3,589.78 is: 5,384.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,380.36 : 17,070.54 = 3,589.78 : x
  2. Step 2: Convert to fraction form
    11,380.36/17,070.54 = 3,589.78/x
  3. Step 3: Cross multiply
    11,380.36x = 17,070.54 × 3,589.78
  4. Step 4: Simplify right side
    11,380.36x = 61,279,483.08
  5. Step 5: Solve for x
    x = 61,279,483.08/11,380.36
  6. Step 6: Final answer
    x = 5,384.67

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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.