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Finding the Fourth Proportional to 18,049.98, 27,080.34 and 8,687.28

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Solution

The fourth proportional to 18,049.98, 27,080.34 and 8,687.28 is: 13,033.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,049.98 : 27,080.34 = 8,687.28 : x
  2. Step 2: Convert to fraction form
    18,049.98/27,080.34 = 8,687.28/x
  3. Step 3: Cross multiply
    18,049.98x = 27,080.34 × 8,687.28
  4. Step 4: Simplify right side
    18,049.98x = 235,254,496.08
  5. Step 5: Solve for x
    x = 235,254,496.08/18,049.98
  6. Step 6: Final answer
    x = 13,033.50

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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.