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Finding the Fourth Proportional to 18,937.74, 28,410.33 and 5,791.98

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Solution

The fourth proportional to 18,937.74, 28,410.33 and 5,791.98 is: 8,689.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,937.74 : 28,410.33 = 5,791.98 : x
  2. Step 2: Convert to fraction form
    18,937.74/28,410.33 = 5,791.98/x
  3. Step 3: Cross multiply
    18,937.74x = 28,410.33 × 5,791.98
  4. Step 4: Simplify right side
    18,937.74x = 164,552,063.15
  5. Step 5: Solve for x
    x = 164,552,063.15/18,937.74
  6. Step 6: Final answer
    x = 8,689.11

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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.