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Finding the Fourth Proportional to 28,004.00, 41,991.41 and 8,279.89

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Solution

The fourth proportional to 28,004.00, 41,991.41 and 8,279.89 is: 12,415.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,004.00 : 41,991.41 = 8,279.89 : x
  2. Step 2: Convert to fraction form
    28,004.00/41,991.41 = 8,279.89/x
  3. Step 3: Cross multiply
    28,004.00x = 41,991.41 × 8,279.89
  4. Step 4: Simplify right side
    28,004.00x = 347,684,171.47
  5. Step 5: Solve for x
    x = 347,684,171.47/28,004.00
  6. Step 6: Final answer
    x = 12,415.52

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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.