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Finding the Fourth Proportional to 17,999.20, 27,008.52 and 8,145.55

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Solution

The fourth proportional to 17,999.20, 27,008.52 and 8,145.55 is: 12,222.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,999.20 : 27,008.52 = 8,145.55 : x
  2. Step 2: Convert to fraction form
    17,999.20/27,008.52 = 8,145.55/x
  3. Step 3: Cross multiply
    17,999.20x = 27,008.52 × 8,145.55
  4. Step 4: Simplify right side
    17,999.20x = 219,999,250.09
  5. Step 5: Solve for x
    x = 219,999,250.09/17,999.20
  6. Step 6: Final answer
    x = 12,222.72

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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.