Home / 13,864.21-20,804.55-5,105.27

Finding the Fourth Proportional to 13,864.21, 20,804.55 and 5,105.27

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Solution

The fourth proportional to 13,864.21, 20,804.55 and 5,105.27 is: 7,660.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,864.21 : 20,804.55 = 5,105.27 : x
  2. Step 2: Convert to fraction form
    13,864.21/20,804.55 = 5,105.27/x
  3. Step 3: Cross multiply
    13,864.21x = 20,804.55 × 5,105.27
  4. Step 4: Simplify right side
    13,864.21x = 106,212,877.85
  5. Step 5: Solve for x
    x = 106,212,877.85/13,864.21
  6. Step 6: Final answer
    x = 7,660.94

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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.