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Finding the Fourth Proportional to 28,163.22, 42,239.44 and 8,441.77

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Solution

The fourth proportional to 28,163.22, 42,239.44 and 8,441.77 is: 12,661.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,163.22 : 42,239.44 = 8,441.77 : x
  2. Step 2: Convert to fraction form
    28,163.22/42,239.44 = 8,441.77/x
  3. Step 3: Cross multiply
    28,163.22x = 42,239.44 × 8,441.77
  4. Step 4: Simplify right side
    28,163.22x = 356,575,637.41
  5. Step 5: Solve for x
    x = 356,575,637.41/28,163.22
  6. Step 6: Final answer
    x = 12,661.04

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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.