Home / 28,161.22-42,243.24-8,437.90

Finding the Fourth Proportional to 28,161.22, 42,243.24 and 8,437.90

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Solution

The fourth proportional to 28,161.22, 42,243.24 and 8,437.90 is: 12,657.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,161.22 : 42,243.24 = 8,437.90 : x
  2. Step 2: Convert to fraction form
    28,161.22/42,243.24 = 8,437.90/x
  3. Step 3: Cross multiply
    28,161.22x = 42,243.24 × 8,437.90
  4. Step 4: Simplify right side
    28,161.22x = 356,444,234.80
  5. Step 5: Solve for x
    x = 356,444,234.80/28,161.22
  6. Step 6: Final answer
    x = 12,657.27

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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.