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Finding the Fourth Proportional to 28,943.67, 43,415.03 and 9,221.96

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Solution

The fourth proportional to 28,943.67, 43,415.03 and 9,221.96 is: 13,832.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,943.67 : 43,415.03 = 9,221.96 : x
  2. Step 2: Convert to fraction form
    28,943.67/43,415.03 = 9,221.96/x
  3. Step 3: Cross multiply
    28,943.67x = 43,415.03 × 9,221.96
  4. Step 4: Simplify right side
    28,943.67x = 400,371,406.87
  5. Step 5: Solve for x
    x = 400,371,406.87/28,943.67
  6. Step 6: Final answer
    x = 13,832.78

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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.