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Finding the Fourth Proportional to 28,745.82, 43,118.73 and 8,755.47

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Solution

The fourth proportional to 28,745.82, 43,118.73 and 8,755.47 is: 13,133.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,745.82 : 43,118.73 = 8,755.47 : x
  2. Step 2: Convert to fraction form
    28,745.82/43,118.73 = 8,755.47/x
  3. Step 3: Cross multiply
    28,745.82x = 43,118.73 × 8,755.47
  4. Step 4: Simplify right side
    28,745.82x = 377,524,746.95
  5. Step 5: Solve for x
    x = 377,524,746.95/28,745.82
  6. Step 6: Final answer
    x = 13,133.21

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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.