Home / 19,891.28-27,449.94-10,939.36

Finding the Fourth Proportional to 19,891.28, 27,449.94 and 10,939.36

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Solution

The fourth proportional to 19,891.28, 27,449.94 and 10,939.36 is: 15,096.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,891.28 : 27,449.94 = 10,939.36 : x
  2. Step 2: Convert to fraction form
    19,891.28/27,449.94 = 10,939.36/x
  3. Step 3: Cross multiply
    19,891.28x = 27,449.94 × 10,939.36
  4. Step 4: Simplify right side
    19,891.28x = 300,284,775.64
  5. Step 5: Solve for x
    x = 300,284,775.64/19,891.28
  6. Step 6: Final answer
    x = 15,096.30

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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.