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Finding the Fourth Proportional to 28,229.50, 42,344.25 and 7,453

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Solution

The fourth proportional to 28,229.50, 42,344.25 and 7,453 is: 11,179.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,229.50 : 42,344.25 = 7,453 : x
  2. Step 2: Convert to fraction form
    28,229.50/42,344.25 = 7,453/x
  3. Step 3: Cross multiply
    28,229.50x = 42,344.25 × 7,453
  4. Step 4: Simplify right side
    28,229.50x = 315,591,695.25
  5. Step 5: Solve for x
    x = 315,591,695.25/28,229.50
  6. Step 6: Final answer
    x = 11,179.50

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Double scale
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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.