Home / 19,320.75-28,983.60-5,469.75

Finding the Fourth Proportional to 19,320.75, 28,983.60 and 5,469.75

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Solution

The fourth proportional to 19,320.75, 28,983.60 and 5,469.75 is: 8,205.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,320.75 : 28,983.60 = 5,469.75 : x
  2. Step 2: Convert to fraction form
    19,320.75/28,983.60 = 5,469.75/x
  3. Step 3: Cross multiply
    19,320.75x = 28,983.60 × 5,469.75
  4. Step 4: Simplify right side
    19,320.75x = 158,533,046.10
  5. Step 5: Solve for x
    x = 158,533,046.10/19,320.75
  6. Step 6: Final answer
    x = 8,205.33

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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.