Home / 20,134.42-27,786.74-11,181.98

Finding the Fourth Proportional to 20,134.42, 27,786.74 and 11,181.98

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Solution

The fourth proportional to 20,134.42, 27,786.74 and 11,181.98 is: 15,431.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,134.42 : 27,786.74 = 11,181.98 : x
  2. Step 2: Convert to fraction form
    20,134.42/27,786.74 = 11,181.98/x
  3. Step 3: Cross multiply
    20,134.42x = 27,786.74 × 11,181.98
  4. Step 4: Simplify right side
    20,134.42x = 310,710,770.95
  5. Step 5: Solve for x
    x = 310,710,770.95/20,134.42
  6. Step 6: Final answer
    x = 15,431.82

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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.