Home / 12,857.64-19,286.42-3,623.64

Finding the Fourth Proportional to 12,857.64, 19,286.42 and 3,623.64

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Solution

The fourth proportional to 12,857.64, 19,286.42 and 3,623.64 is: 5,435.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,857.64 : 19,286.42 = 3,623.64 : x
  2. Step 2: Convert to fraction form
    12,857.64/19,286.42 = 3,623.64/x
  3. Step 3: Cross multiply
    12,857.64x = 19,286.42 × 3,623.64
  4. Step 4: Simplify right side
    12,857.64x = 69,887,042.97
  5. Step 5: Solve for x
    x = 69,887,042.97/12,857.64
  6. Step 6: Final answer
    x = 5,435.45

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Similar ratio
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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.