Home / 18,838.44-28,243.26-11,431.08

Finding the Fourth Proportional to 18,838.44, 28,243.26 and 11,431.08

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Solution

The fourth proportional to 18,838.44, 28,243.26 and 11,431.08 is: 17,137.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,838.44 : 28,243.26 = 11,431.08 : x
  2. Step 2: Convert to fraction form
    18,838.44/28,243.26 = 11,431.08/x
  3. Step 3: Cross multiply
    18,838.44x = 28,243.26 × 11,431.08
  4. Step 4: Simplify right side
    18,838.44x = 322,850,964.52
  5. Step 5: Solve for x
    x = 322,850,964.52/18,838.44
  6. Step 6: Final answer
    x = 17,137.88

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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.