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Finding the Fourth Proportional to 28,706.60, 42,983.22 and 16,850.54

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Solution

The fourth proportional to 28,706.60, 42,983.22 and 16,850.54 is: 25,230.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,706.60 : 42,983.22 = 16,850.54 : x
  2. Step 2: Convert to fraction form
    28,706.60/42,983.22 = 16,850.54/x
  3. Step 3: Cross multiply
    28,706.60x = 42,983.22 × 16,850.54
  4. Step 4: Simplify right side
    28,706.60x = 724,290,467.94
  5. Step 5: Solve for x
    x = 724,290,467.94/28,706.60
  6. Step 6: Final answer
    x = 25,230.80

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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.