Home / 31,828.90-43,905.60-19,871.48

Finding the Fourth Proportional to 31,828.90, 43,905.60 and 19,871.48

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Solution

The fourth proportional to 31,828.90, 43,905.60 and 19,871.48 is: 27,411.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,828.90 : 43,905.60 = 19,871.48 : x
  2. Step 2: Convert to fraction form
    31,828.90/43,905.60 = 19,871.48/x
  3. Step 3: Cross multiply
    31,828.90x = 43,905.60 × 19,871.48
  4. Step 4: Simplify right side
    31,828.90x = 872,469,032.76
  5. Step 5: Solve for x
    x = 872,469,032.76/31,828.90
  6. Step 6: Final answer
    x = 27,411.22

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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.