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Finding the Fourth Proportional to 28,219.54, 42,299.97 and 9,493.22

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Solution

The fourth proportional to 28,219.54, 42,299.97 and 9,493.22 is: 14,229.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,219.54 : 42,299.97 = 9,493.22 : x
  2. Step 2: Convert to fraction form
    28,219.54/42,299.97 = 9,493.22/x
  3. Step 3: Cross multiply
    28,219.54x = 42,299.97 × 9,493.22
  4. Step 4: Simplify right side
    28,219.54x = 401,562,921.20
  5. Step 5: Solve for x
    x = 401,562,921.20/28,219.54
  6. Step 6: Final answer
    x = 14,229.96

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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.