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Finding the Fourth Proportional to 18,180.20, 27,255.90 and 9,972.20

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Solution

The fourth proportional to 18,180.20, 27,255.90 and 9,972.20 is: 14,950.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,180.20 : 27,255.90 = 9,972.20 : x
  2. Step 2: Convert to fraction form
    18,180.20/27,255.90 = 9,972.20/x
  3. Step 3: Cross multiply
    18,180.20x = 27,255.90 × 9,972.20
  4. Step 4: Simplify right side
    18,180.20x = 271,801,285.98
  5. Step 5: Solve for x
    x = 271,801,285.98/18,180.20
  6. Step 6: Final answer
    x = 14,950.40

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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.