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Finding the Fourth Proportional to 19,046.57, 28,528.25 and 7,919.54

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Solution

The fourth proportional to 19,046.57, 28,528.25 and 7,919.54 is: 11,862.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,046.57 : 28,528.25 = 7,919.54 : x
  2. Step 2: Convert to fraction form
    19,046.57/28,528.25 = 7,919.54/x
  3. Step 3: Cross multiply
    19,046.57x = 28,528.25 × 7,919.54
  4. Step 4: Simplify right side
    19,046.57x = 225,930,434.77
  5. Step 5: Solve for x
    x = 225,930,434.77/19,046.57
  6. Step 6: Final answer
    x = 11,862.00

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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.