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Finding the Fourth Proportional to 28,519.54, 42,781.37 and 8,795.54

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Solution

The fourth proportional to 28,519.54, 42,781.37 and 8,795.54 is: 13,193.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,519.54 : 42,781.37 = 8,795.54 : x
  2. Step 2: Convert to fraction form
    28,519.54/42,781.37 = 8,795.54/x
  3. Step 3: Cross multiply
    28,519.54x = 42,781.37 × 8,795.54
  4. Step 4: Simplify right side
    28,519.54x = 376,285,073.42
  5. Step 5: Solve for x
    x = 376,285,073.42/28,519.54
  6. Step 6: Final answer
    x = 13,193.94

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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.