Home / 19,881.71-27,436.82-11,383.97

Finding the Fourth Proportional to 19,881.71, 27,436.82 and 11,383.97

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Solution

The fourth proportional to 19,881.71, 27,436.82 and 11,383.97 is: 15,709.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,881.71 : 27,436.82 = 11,383.97 : x
  2. Step 2: Convert to fraction form
    19,881.71/27,436.82 = 11,383.97/x
  3. Step 3: Cross multiply
    19,881.71x = 27,436.82 × 11,383.97
  4. Step 4: Simplify right side
    19,881.71x = 312,339,899.84
  5. Step 5: Solve for x
    x = 312,339,899.84/19,881.71
  6. Step 6: Final answer
    x = 15,709.91

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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.