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Finding the Fourth Proportional to 19,843.65, 29,754.97 and 8,745.12

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Solution

The fourth proportional to 19,843.65, 29,754.97 and 8,745.12 is: 13,113.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,843.65 : 29,754.97 = 8,745.12 : x
  2. Step 2: Convert to fraction form
    19,843.65/29,754.97 = 8,745.12/x
  3. Step 3: Cross multiply
    19,843.65x = 29,754.97 × 8,745.12
  4. Step 4: Simplify right side
    19,843.65x = 260,210,761.38
  5. Step 5: Solve for x
    x = 260,210,761.38/19,843.65
  6. Step 6: Final answer
    x = 13,113.05

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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.