Home / 13,860.29-20,787.39-3,997.43

Finding the Fourth Proportional to 13,860.29, 20,787.39 and 3,997.43

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Solution

The fourth proportional to 13,860.29, 20,787.39 and 3,997.43 is: 5,995.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,860.29 : 20,787.39 = 3,997.43 : x
  2. Step 2: Convert to fraction form
    13,860.29/20,787.39 = 3,997.43/x
  3. Step 3: Cross multiply
    13,860.29x = 20,787.39 × 3,997.43
  4. Step 4: Simplify right side
    13,860.29x = 83,096,032.47
  5. Step 5: Solve for x
    x = 83,096,032.47/13,860.29
  6. Step 6: Final answer
    x = 5,995.26

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1.5x scale

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.