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Finding the Fourth Proportional to 18,043.20, 27,089.10 and 11,482.20

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Solution

The fourth proportional to 18,043.20, 27,089.10 and 11,482.20 is: 17,238.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,043.20 : 27,089.10 = 11,482.20 : x
  2. Step 2: Convert to fraction form
    18,043.20/27,089.10 = 11,482.20/x
  3. Step 3: Cross multiply
    18,043.20x = 27,089.10 × 11,482.20
  4. Step 4: Simplify right side
    18,043.20x = 311,042,464.02
  5. Step 5: Solve for x
    x = 311,042,464.02/18,043.20
  6. Step 6: Final answer
    x = 17,238.76

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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.