Home / 19,022.43-28,540.38-8,491.47

Finding the Fourth Proportional to 19,022.43, 28,540.38 and 8,491.47

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Solution

The fourth proportional to 19,022.43, 28,540.38 and 8,491.47 is: 12,740.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,022.43 : 28,540.38 = 8,491.47 : x
  2. Step 2: Convert to fraction form
    19,022.43/28,540.38 = 8,491.47/x
  3. Step 3: Cross multiply
    19,022.43x = 28,540.38 × 8,491.47
  4. Step 4: Simplify right side
    19,022.43x = 242,349,780.56
  5. Step 5: Solve for x
    x = 242,349,780.56/19,022.43
  6. Step 6: Final answer
    x = 12,740.21

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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.