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Finding the Fourth Proportional to 18,757.82, 28,097.04 and 12,164.42

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Solution

The fourth proportional to 18,757.82, 28,097.04 and 12,164.42 is: 18,220.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,757.82 : 28,097.04 = 12,164.42 : x
  2. Step 2: Convert to fraction form
    18,757.82/28,097.04 = 12,164.42/x
  3. Step 3: Cross multiply
    18,757.82x = 28,097.04 × 12,164.42
  4. Step 4: Simplify right side
    18,757.82x = 341,784,195.32
  5. Step 5: Solve for x
    x = 341,784,195.32/18,757.82
  6. Step 6: Final answer
    x = 18,220.89

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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.