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Finding the Fourth Proportional to 18,679.78, 28,023 and 6,200.56

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Solution

The fourth proportional to 18,679.78, 28,023 and 6,200.56 is: 9,301.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,679.78 : 28,023 = 6,200.56 : x
  2. Step 2: Convert to fraction form
    18,679.78/28,023 = 6,200.56/x
  3. Step 3: Cross multiply
    18,679.78x = 28,023 × 6,200.56
  4. Step 4: Simplify right side
    18,679.78x = 173,758,292.88
  5. Step 5: Solve for x
    x = 173,758,292.88/18,679.78
  6. Step 6: Final answer
    x = 9,301.95

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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.