Home / 13,141.89-19,712.48-3,781.94

Finding the Fourth Proportional to 13,141.89, 19,712.48 and 3,781.94

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Solution

The fourth proportional to 13,141.89, 19,712.48 and 3,781.94 is: 5,672.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,141.89 : 19,712.48 = 3,781.94 : x
  2. Step 2: Convert to fraction form
    13,141.89/19,712.48 = 3,781.94/x
  3. Step 3: Cross multiply
    13,141.89x = 19,712.48 × 3,781.94
  4. Step 4: Simplify right side
    13,141.89x = 74,551,299.14
  5. Step 5: Solve for x
    x = 74,551,299.14/13,141.89
  6. Step 6: Final answer
    x = 5,672.80

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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.