Home / 13,796.78-20,697.91-5,480.72

Finding the Fourth Proportional to 13,796.78, 20,697.91 and 5,480.72

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Solution

The fourth proportional to 13,796.78, 20,697.91 and 5,480.72 is: 8,222.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,796.78 : 20,697.91 = 5,480.72 : x
  2. Step 2: Convert to fraction form
    13,796.78/20,697.91 = 5,480.72/x
  3. Step 3: Cross multiply
    13,796.78x = 20,697.91 × 5,480.72
  4. Step 4: Simplify right side
    13,796.78x = 113,439,318.40
  5. Step 5: Solve for x
    x = 113,439,318.40/13,796.78
  6. Step 6: Final answer
    x = 8,222.16

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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.