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Finding the Fourth Proportional to 28,674.30, 43,011.44 and 8,954.54

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Solution

The fourth proportional to 28,674.30, 43,011.44 and 8,954.54 is: 13,431.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,674.30 : 43,011.44 = 8,954.54 : x
  2. Step 2: Convert to fraction form
    28,674.30/43,011.44 = 8,954.54/x
  3. Step 3: Cross multiply
    28,674.30x = 43,011.44 × 8,954.54
  4. Step 4: Simplify right side
    28,674.30x = 385,147,659.94
  5. Step 5: Solve for x
    x = 385,147,659.94/28,674.30
  6. Step 6: Final answer
    x = 13,431.81

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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.