Home / 9,961.78-13,747.22-5,485.54

Finding the Fourth Proportional to 9,961.78, 13,747.22 and 5,485.54

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Solution

The fourth proportional to 9,961.78, 13,747.22 and 5,485.54 is: 7,570.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,961.78 : 13,747.22 = 5,485.54 : x
  2. Step 2: Convert to fraction form
    9,961.78/13,747.22 = 5,485.54/x
  3. Step 3: Cross multiply
    9,961.78x = 13,747.22 × 5,485.54
  4. Step 4: Simplify right side
    9,961.78x = 75,410,925.20
  5. Step 5: Solve for x
    x = 75,410,925.20/9,961.78
  6. Step 6: Final answer
    x = 7,570.03

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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.