Home / 13,862.54-20,787.64-3,999.48

Finding the Fourth Proportional to 13,862.54, 20,787.64 and 3,999.48

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Solution

The fourth proportional to 13,862.54, 20,787.64 and 3,999.48 is: 5,997.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,862.54 : 20,787.64 = 3,999.48 : x
  2. Step 2: Convert to fraction form
    13,862.54/20,787.64 = 3,999.48/x
  3. Step 3: Cross multiply
    13,862.54x = 20,787.64 × 3,999.48
  4. Step 4: Simplify right side
    13,862.54x = 83,139,662.47
  5. Step 5: Solve for x
    x = 83,139,662.47/13,862.54
  6. Step 6: Final answer
    x = 5,997.43

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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.