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Finding the Fourth Proportional to 28,520.54, 42,782.87 and 8,796.54

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Solution

The fourth proportional to 28,520.54, 42,782.87 and 8,796.54 is: 13,195.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,520.54 : 42,782.87 = 8,796.54 : x
  2. Step 2: Convert to fraction form
    28,520.54/42,782.87 = 8,796.54/x
  3. Step 3: Cross multiply
    28,520.54x = 42,782.87 × 8,796.54
  4. Step 4: Simplify right side
    28,520.54x = 376,341,227.27
  5. Step 5: Solve for x
    x = 376,341,227.27/28,520.54
  6. Step 6: Final answer
    x = 13,195.45

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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.