Home / 13,912.16-19,200.39-7,944.68

Finding the Fourth Proportional to 13,912.16, 19,200.39 and 7,944.68

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Solution

The fourth proportional to 13,912.16, 19,200.39 and 7,944.68 is: 10,964.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,912.16 : 19,200.39 = 7,944.68 : x
  2. Step 2: Convert to fraction form
    13,912.16/19,200.39 = 7,944.68/x
  3. Step 3: Cross multiply
    13,912.16x = 19,200.39 × 7,944.68
  4. Step 4: Simplify right side
    13,912.16x = 152,540,954.43
  5. Step 5: Solve for x
    x = 152,540,954.43/13,912.16
  6. Step 6: Final answer
    x = 10,964.58

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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.