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Finding the Fourth Proportional to 18,798, 28,197.45 and 6,318.18

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Solution

The fourth proportional to 18,798, 28,197.45 and 6,318.18 is: 9,477.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,798 : 28,197.45 = 6,318.18 : x
  2. Step 2: Convert to fraction form
    18,798/28,197.45 = 6,318.18/x
  3. Step 3: Cross multiply
    18,798x = 28,197.45 × 6,318.18
  4. Step 4: Simplify right side
    18,798x = 178,156,564.64
  5. Step 5: Solve for x
    x = 178,156,564.64/18,798
  6. Step 6: Final answer
    x = 9,477.42

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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.