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Finding the Fourth Proportional to 28,894.51, 43,263.87 and 18,874.44

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Solution

The fourth proportional to 28,894.51, 43,263.87 and 18,874.44 is: 28,260.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,894.51 : 43,263.87 = 18,874.44 : x
  2. Step 2: Convert to fraction form
    28,894.51/43,263.87 = 18,874.44/x
  3. Step 3: Cross multiply
    28,894.51x = 43,263.87 × 18,874.44
  4. Step 4: Simplify right side
    28,894.51x = 816,581,318.48
  5. Step 5: Solve for x
    x = 816,581,318.48/28,894.51
  6. Step 6: Final answer
    x = 28,260.78

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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.