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Finding the Fourth Proportional to 28,552.90, 42,839.08 and 8,562.88

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Solution

The fourth proportional to 28,552.90, 42,839.08 and 8,562.88 is: 12,847.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,552.90 : 42,839.08 = 8,562.88 : x
  2. Step 2: Convert to fraction form
    28,552.90/42,839.08 = 8,562.88/x
  3. Step 3: Cross multiply
    28,552.90x = 42,839.08 × 8,562.88
  4. Step 4: Simplify right side
    28,552.90x = 366,825,879.25
  5. Step 5: Solve for x
    x = 366,825,879.25/28,552.90
  6. Step 6: Final answer
    x = 12,847.24

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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.