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Finding the Fourth Proportional to 28,745.46, 43,124.67 and 8,756.73

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Solution

The fourth proportional to 28,745.46, 43,124.67 and 8,756.73 is: 13,137.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,745.46 : 43,124.67 = 8,756.73 : x
  2. Step 2: Convert to fraction form
    28,745.46/43,124.67 = 8,756.73/x
  3. Step 3: Cross multiply
    28,745.46x = 43,124.67 × 8,756.73
  4. Step 4: Simplify right side
    28,745.46x = 377,631,091.53
  5. Step 5: Solve for x
    x = 377,631,091.53/28,745.46
  6. Step 6: Final answer
    x = 13,137.07

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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.