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Finding the Fourth Proportional to 18,798, 28,198.91 and 6,954.90

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Solution

The fourth proportional to 18,798, 28,198.91 and 6,954.90 is: 10,433.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,798 : 28,198.91 = 6,954.90 : x
  2. Step 2: Convert to fraction form
    18,798/28,198.91 = 6,954.90/x
  3. Step 3: Cross multiply
    18,798x = 28,198.91 × 6,954.90
  4. Step 4: Simplify right side
    18,798x = 196,120,564.38
  5. Step 5: Solve for x
    x = 196,120,564.38/18,798
  6. Step 6: Final answer
    x = 10,433.05

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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.