Home / 31,176.78-43,043.31-19,852.62

Finding the Fourth Proportional to 31,176.78, 43,043.31 and 19,852.62

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Solution

The fourth proportional to 31,176.78, 43,043.31 and 19,852.62 is: 27,408.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,176.78 : 43,043.31 = 19,852.62 : x
  2. Step 2: Convert to fraction form
    31,176.78/43,043.31 = 19,852.62/x
  3. Step 3: Cross multiply
    31,176.78x = 43,043.31 × 19,852.62
  4. Step 4: Simplify right side
    31,176.78x = 854,522,476.97
  5. Step 5: Solve for x
    x = 854,522,476.97/31,176.78
  6. Step 6: Final answer
    x = 27,408.94

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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.