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Finding the Fourth Proportional to 19,855.94, 29,791.67 and 8,754.84

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Solution

The fourth proportional to 19,855.94, 29,791.67 and 8,754.84 is: 13,135.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,855.94 : 29,791.67 = 8,754.84 : x
  2. Step 2: Convert to fraction form
    19,855.94/29,791.67 = 8,754.84/x
  3. Step 3: Cross multiply
    19,855.94x = 29,791.67 × 8,754.84
  4. Step 4: Simplify right side
    19,855.94x = 260,821,260.41
  5. Step 5: Solve for x
    x = 260,821,260.41/19,855.94
  6. Step 6: Final answer
    x = 13,135.68

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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.