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Finding the Fourth Proportional to 18,198.88, 27,303.84 and 8,958.40

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Solution

The fourth proportional to 18,198.88, 27,303.84 and 8,958.40 is: 13,440.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,198.88 : 27,303.84 = 8,958.40 : x
  2. Step 2: Convert to fraction form
    18,198.88/27,303.84 = 8,958.40/x
  3. Step 3: Cross multiply
    18,198.88x = 27,303.84 × 8,958.40
  4. Step 4: Simplify right side
    18,198.88x = 244,598,720.26
  5. Step 5: Solve for x
    x = 244,598,720.26/18,198.88
  6. Step 6: Final answer
    x = 13,440.32

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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.