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Finding the Fourth Proportional to 28,991.97, 43,491.74 and 8,216.01

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Solution

The fourth proportional to 28,991.97, 43,491.74 and 8,216.01 is: 12,325.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,991.97 : 43,491.74 = 8,216.01 : x
  2. Step 2: Convert to fraction form
    28,991.97/43,491.74 = 8,216.01/x
  3. Step 3: Cross multiply
    28,991.97x = 43,491.74 × 8,216.01
  4. Step 4: Simplify right side
    28,991.97x = 357,328,529.68
  5. Step 5: Solve for x
    x = 357,328,529.68/28,991.97
  6. Step 6: Final answer
    x = 12,325.09

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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.