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Finding the Fourth Proportional to 28,905.22, 43,355.54 and 9,183.94

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Solution

The fourth proportional to 28,905.22, 43,355.54 and 9,183.94 is: 13,775.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,905.22 : 43,355.54 = 9,183.94 : x
  2. Step 2: Convert to fraction form
    28,905.22/43,355.54 = 9,183.94/x
  3. Step 3: Cross multiply
    28,905.22x = 43,355.54 × 9,183.94
  4. Step 4: Simplify right side
    28,905.22x = 398,174,678.03
  5. Step 5: Solve for x
    x = 398,174,678.03/28,905.22
  6. Step 6: Final answer
    x = 13,775.18

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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.