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Finding the Fourth Proportional to 11,684.64, 17,526.78 and 2,919.54

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Solution

The fourth proportional to 11,684.64, 17,526.78 and 2,919.54 is: 4,379.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,684.64 : 17,526.78 = 2,919.54 : x
  2. Step 2: Convert to fraction form
    11,684.64/17,526.78 = 2,919.54/x
  3. Step 3: Cross multiply
    11,684.64x = 17,526.78 × 2,919.54
  4. Step 4: Simplify right side
    11,684.64x = 51,170,135.28
  5. Step 5: Solve for x
    x = 51,170,135.28/11,684.64
  6. Step 6: Final answer
    x = 4,379.27

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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.