Home / 11,478.39-17,220.80-4,083.60

Finding the Fourth Proportional to 11,478.39, 17,220.80 and 4,083.60

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Solution

The fourth proportional to 11,478.39, 17,220.80 and 4,083.60 is: 6,126.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,478.39 : 17,220.80 = 4,083.60 : x
  2. Step 2: Convert to fraction form
    11,478.39/17,220.80 = 4,083.60/x
  3. Step 3: Cross multiply
    11,478.39x = 17,220.80 × 4,083.60
  4. Step 4: Simplify right side
    11,478.39x = 70,322,836.80
  5. Step 5: Solve for x
    x = 70,322,836.80/11,478.39
  6. Step 6: Final answer
    x = 6,126.54

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1.5x scale

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.