Home / 19,704.64-27,188.96-11,321.60

Finding the Fourth Proportional to 19,704.64, 27,188.96 and 11,321.60

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Solution

The fourth proportional to 19,704.64, 27,188.96 and 11,321.60 is: 15,621.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,704.64 : 27,188.96 = 11,321.60 : x
  2. Step 2: Convert to fraction form
    19,704.64/27,188.96 = 11,321.60/x
  3. Step 3: Cross multiply
    19,704.64x = 27,188.96 × 11,321.60
  4. Step 4: Simplify right side
    19,704.64x = 307,822,529.54
  5. Step 5: Solve for x
    x = 307,822,529.54/19,704.64
  6. Step 6: Final answer
    x = 15,621.83

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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.