Home / 14,124.82-21,172.44-4,761.61

Finding the Fourth Proportional to 14,124.82, 21,172.44 and 4,761.61

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Solution

The fourth proportional to 14,124.82, 21,172.44 and 4,761.61 is: 7,137.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,124.82 : 21,172.44 = 4,761.61 : x
  2. Step 2: Convert to fraction form
    14,124.82/21,172.44 = 4,761.61/x
  3. Step 3: Cross multiply
    14,124.82x = 21,172.44 × 4,761.61
  4. Step 4: Simplify right side
    14,124.82x = 100,814,902.03
  5. Step 5: Solve for x
    x = 100,814,902.03/14,124.82
  6. Step 6: Final answer
    x = 7,137.43

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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.