Home / 12,089.70-18,135.90-3,769.65

Finding the Fourth Proportional to 12,089.70, 18,135.90 and 3,769.65

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Solution

The fourth proportional to 12,089.70, 18,135.90 and 3,769.65 is: 5,654.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,089.70 : 18,135.90 = 3,769.65 : x
  2. Step 2: Convert to fraction form
    12,089.70/18,135.90 = 3,769.65/x
  3. Step 3: Cross multiply
    12,089.70x = 18,135.90 × 3,769.65
  4. Step 4: Simplify right side
    12,089.70x = 68,365,995.44
  5. Step 5: Solve for x
    x = 68,365,995.44/12,089.70
  6. Step 6: Final answer
    x = 5,654.90

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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.