Home / 13,936.78-19,231.50-8,270.56

Finding the Fourth Proportional to 13,936.78, 19,231.50 and 8,270.56

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Solution

The fourth proportional to 13,936.78, 19,231.50 and 8,270.56 is: 11,412.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,936.78 : 19,231.50 = 8,270.56 : x
  2. Step 2: Convert to fraction form
    13,936.78/19,231.50 = 8,270.56/x
  3. Step 3: Cross multiply
    13,936.78x = 19,231.50 × 8,270.56
  4. Step 4: Simplify right side
    13,936.78x = 159,055,274.64
  5. Step 5: Solve for x
    x = 159,055,274.64/13,936.78
  6. Step 6: Final answer
    x = 11,412.63

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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.