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Finding the Fourth Proportional to 19,240.97, 28,859.57 and 9,387.05

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Solution

The fourth proportional to 19,240.97, 28,859.57 and 9,387.05 is: 14,079.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,240.97 : 28,859.57 = 9,387.05 : x
  2. Step 2: Convert to fraction form
    19,240.97/28,859.57 = 9,387.05/x
  3. Step 3: Cross multiply
    19,240.97x = 28,859.57 × 9,387.05
  4. Step 4: Simplify right side
    19,240.97x = 270,906,251.78
  5. Step 5: Solve for x
    x = 270,906,251.78/19,240.97
  6. Step 6: Final answer
    x = 14,079.65

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.