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Finding the Fourth Proportional to 28,229.86, 42,344.79 and 7,453.54

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Solution

The fourth proportional to 28,229.86, 42,344.79 and 7,453.54 is: 11,180.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,229.86 : 42,344.79 = 7,453.54 : x
  2. Step 2: Convert to fraction form
    28,229.86/42,344.79 = 7,453.54/x
  3. Step 3: Cross multiply
    28,229.86x = 42,344.79 × 7,453.54
  4. Step 4: Simplify right side
    28,229.86x = 315,618,586.06
  5. Step 5: Solve for x
    x = 315,618,586.06/28,229.86
  6. Step 6: Final answer
    x = 11,180.31

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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.