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Finding the Fourth Proportional to 28,994.50, 43,499.04 and 8,218

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Solution

The fourth proportional to 28,994.50, 43,499.04 and 8,218 is: 12,329.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,994.50 : 43,499.04 = 8,218 : x
  2. Step 2: Convert to fraction form
    28,994.50/43,499.04 = 8,218/x
  3. Step 3: Cross multiply
    28,994.50x = 43,499.04 × 8,218
  4. Step 4: Simplify right side
    28,994.50x = 357,475,110.72
  5. Step 5: Solve for x
    x = 357,475,110.72/28,994.50
  6. Step 6: Final answer
    x = 12,329.07

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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.