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Finding the Fourth Proportional to 18,002.78, 24,843.66 and 9,936.50

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Solution

The fourth proportional to 18,002.78, 24,843.66 and 9,936.50 is: 13,712.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,002.78 : 24,843.66 = 9,936.50 : x
  2. Step 2: Convert to fraction form
    18,002.78/24,843.66 = 9,936.50/x
  3. Step 3: Cross multiply
    18,002.78x = 24,843.66 × 9,936.50
  4. Step 4: Simplify right side
    18,002.78x = 246,859,027.59
  5. Step 5: Solve for x
    x = 246,859,027.59/18,002.78
  6. Step 6: Final answer
    x = 13,712.27

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.