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Finding the Fourth Proportional to 18,043.35, 27,081.90 and 9,165.03

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Solution

The fourth proportional to 18,043.35, 27,081.90 and 9,165.03 is: 13,756.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,043.35 : 27,081.90 = 9,165.03 : x
  2. Step 2: Convert to fraction form
    18,043.35/27,081.90 = 9,165.03/x
  3. Step 3: Cross multiply
    18,043.35x = 27,081.90 × 9,165.03
  4. Step 4: Simplify right side
    18,043.35x = 248,206,425.96
  5. Step 5: Solve for x
    x = 248,206,425.96/18,043.35
  6. Step 6: Final answer
    x = 13,756.12

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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.