Home / 11,440.44-15,789.60-6,728.40

Finding the Fourth Proportional to 11,440.44, 15,789.60 and 6,728.40

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Solution

The fourth proportional to 11,440.44, 15,789.60 and 6,728.40 is: 9,286.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,440.44 : 15,789.60 = 6,728.40 : x
  2. Step 2: Convert to fraction form
    11,440.44/15,789.60 = 6,728.40/x
  3. Step 3: Cross multiply
    11,440.44x = 15,789.60 × 6,728.40
  4. Step 4: Simplify right side
    11,440.44x = 106,238,744.64
  5. Step 5: Solve for x
    x = 106,238,744.64/11,440.44
  6. Step 6: Final answer
    x = 9,286.25

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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.