Home / 19,891.83-27,451.40-10,939.71

Finding the Fourth Proportional to 19,891.83, 27,451.40 and 10,939.71

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Solution

The fourth proportional to 19,891.83, 27,451.40 and 10,939.71 is: 15,097.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,891.83 : 27,451.40 = 10,939.71 : x
  2. Step 2: Convert to fraction form
    19,891.83/27,451.40 = 10,939.71/x
  3. Step 3: Cross multiply
    19,891.83x = 27,451.40 × 10,939.71
  4. Step 4: Simplify right side
    19,891.83x = 300,310,355.09
  5. Step 5: Solve for x
    x = 300,310,355.09/19,891.83
  6. Step 6: Final answer
    x = 15,097.17

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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.