Home / 13,906.28-20,868.54-12,983.64

Finding the Fourth Proportional to 13,906.28, 20,868.54 and 12,983.64

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Solution

The fourth proportional to 13,906.28, 20,868.54 and 12,983.64 is: 19,483.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,906.28 : 20,868.54 = 12,983.64 : x
  2. Step 2: Convert to fraction form
    13,906.28/20,868.54 = 12,983.64/x
  3. Step 3: Cross multiply
    13,906.28x = 20,868.54 × 12,983.64
  4. Step 4: Simplify right side
    13,906.28x = 270,949,601.13
  5. Step 5: Solve for x
    x = 270,949,601.13/13,906.28
  6. Step 6: Final answer
    x = 19,483.97

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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.