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Finding the Fourth Proportional to 19,049.70, 28,579.41 and 7,359.78

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Solution

The fourth proportional to 19,049.70, 28,579.41 and 7,359.78 is: 11,041.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,049.70 : 28,579.41 = 7,359.78 : x
  2. Step 2: Convert to fraction form
    19,049.70/28,579.41 = 7,359.78/x
  3. Step 3: Cross multiply
    19,049.70x = 28,579.41 × 7,359.78
  4. Step 4: Simplify right side
    19,049.70x = 210,338,170.13
  5. Step 5: Solve for x
    x = 210,338,170.13/19,049.70
  6. Step 6: Final answer
    x = 11,041.55

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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.