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Finding the Fourth Proportional to 11,424.88, 15,773.15 and 7,179.54

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Solution

The fourth proportional to 11,424.88, 15,773.15 and 7,179.54 is: 9,912.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,424.88 : 15,773.15 = 7,179.54 : x
  2. Step 2: Convert to fraction form
    11,424.88/15,773.15 = 7,179.54/x
  3. Step 3: Cross multiply
    11,424.88x = 15,773.15 × 7,179.54
  4. Step 4: Simplify right side
    11,424.88x = 113,243,879.77
  5. Step 5: Solve for x
    x = 113,243,879.77/11,424.88
  6. Step 6: Final answer
    x = 9,912.04

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1.5x scale

Why These Related Problems?

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