Home / 18,310.26-27,469.47-7,780.62

Finding the Fourth Proportional to 18,310.26, 27,469.47 and 7,780.62

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Solution

The fourth proportional to 18,310.26, 27,469.47 and 7,780.62 is: 11,672.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,310.26 : 27,469.47 = 7,780.62 : x
  2. Step 2: Convert to fraction form
    18,310.26/27,469.47 = 7,780.62/x
  3. Step 3: Cross multiply
    18,310.26x = 27,469.47 × 7,780.62
  4. Step 4: Simplify right side
    18,310.26x = 213,729,507.67
  5. Step 5: Solve for x
    x = 213,729,507.67/18,310.26
  6. Step 6: Final answer
    x = 11,672.66

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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.