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Finding the Fourth Proportional to 18,103.70, 27,163.65 and 8,237.90

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Solution

The fourth proportional to 18,103.70, 27,163.65 and 8,237.90 is: 12,360.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,103.70 : 27,163.65 = 8,237.90 : x
  2. Step 2: Convert to fraction form
    18,103.70/27,163.65 = 8,237.90/x
  3. Step 3: Cross multiply
    18,103.70x = 27,163.65 × 8,237.90
  4. Step 4: Simplify right side
    18,103.70x = 223,771,432.34
  5. Step 5: Solve for x
    x = 223,771,432.34/18,103.70
  6. Step 6: Final answer
    x = 12,360.54

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1.5x scale

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.