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Finding the Fourth Proportional to 19,080.80, 28,589.88 and 18,351.80

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Solution

The fourth proportional to 19,080.80, 28,589.88 and 18,351.80 is: 27,497.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,080.80 : 28,589.88 = 18,351.80 : x
  2. Step 2: Convert to fraction form
    19,080.80/28,589.88 = 18,351.80/x
  3. Step 3: Cross multiply
    19,080.80x = 28,589.88 × 18,351.80
  4. Step 4: Simplify right side
    19,080.80x = 524,675,759.78
  5. Step 5: Solve for x
    x = 524,675,759.78/19,080.80
  6. Step 6: Final answer
    x = 27,497.58

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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.