Home / 20,996.14-28,965.32-14,187.98

Finding the Fourth Proportional to 20,996.14, 28,965.32 and 14,187.98

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Solution

The fourth proportional to 20,996.14, 28,965.32 and 14,187.98 is: 19,573.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,996.14 : 28,965.32 = 14,187.98 : x
  2. Step 2: Convert to fraction form
    20,996.14/28,965.32 = 14,187.98/x
  3. Step 3: Cross multiply
    20,996.14x = 28,965.32 × 14,187.98
  4. Step 4: Simplify right side
    20,996.14x = 410,959,380.85
  5. Step 5: Solve for x
    x = 410,959,380.85/20,996.14
  6. Step 6: Final answer
    x = 19,573.09

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.