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Finding the Fourth Proportional to 18,078.98, 27,126.72 and 10,697.90

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Solution

The fourth proportional to 18,078.98, 27,126.72 and 10,697.90 is: 16,051.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,078.98 : 27,126.72 = 10,697.90 : x
  2. Step 2: Convert to fraction form
    18,078.98/27,126.72 = 10,697.90/x
  3. Step 3: Cross multiply
    18,078.98x = 27,126.72 × 10,697.90
  4. Step 4: Simplify right side
    18,078.98x = 290,198,937.89
  5. Step 5: Solve for x
    x = 290,198,937.89/18,078.98
  6. Step 6: Final answer
    x = 16,051.73

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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.