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Finding the Fourth Proportional to 28,626.44, 42,939.90 and 7,850.12

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Solution

The fourth proportional to 28,626.44, 42,939.90 and 7,850.12 is: 11,775.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,626.44 : 42,939.90 = 7,850.12 : x
  2. Step 2: Convert to fraction form
    28,626.44/42,939.90 = 7,850.12/x
  3. Step 3: Cross multiply
    28,626.44x = 42,939.90 × 7,850.12
  4. Step 4: Simplify right side
    28,626.44x = 337,083,367.79
  5. Step 5: Solve for x
    x = 337,083,367.79/28,626.44
  6. Step 6: Final answer
    x = 11,775.25

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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.