Home / 20,801.75-28,706.42-11,850.09

Finding the Fourth Proportional to 20,801.75, 28,706.42 and 11,850.09

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Solution

The fourth proportional to 20,801.75, 28,706.42 and 11,850.09 is: 16,353.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,801.75 : 28,706.42 = 11,850.09 : x
  2. Step 2: Convert to fraction form
    20,801.75/28,706.42 = 11,850.09/x
  3. Step 3: Cross multiply
    20,801.75x = 28,706.42 × 11,850.09
  4. Step 4: Simplify right side
    20,801.75x = 340,173,660.58
  5. Step 5: Solve for x
    x = 340,173,660.58/20,801.75
  6. Step 6: Final answer
    x = 16,353.13

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.