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Finding the Fourth Proportional to 28,673.83, 43,003.45 and 8,954.38

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Solution

The fourth proportional to 28,673.83, 43,003.45 and 8,954.38 is: 13,429.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,673.83 : 43,003.45 = 8,954.38 : x
  2. Step 2: Convert to fraction form
    28,673.83/43,003.45 = 8,954.38/x
  3. Step 3: Cross multiply
    28,673.83x = 43,003.45 × 8,954.38
  4. Step 4: Simplify right side
    28,673.83x = 385,068,972.82
  5. Step 5: Solve for x
    x = 385,068,972.82/28,673.83
  6. Step 6: Final answer
    x = 13,429.29

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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.