Home / 19,286.67-28,947.83-11,905.55

Finding the Fourth Proportional to 19,286.67, 28,947.83 and 11,905.55

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Solution

The fourth proportional to 19,286.67, 28,947.83 and 11,905.55 is: 17,869.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,286.67 : 28,947.83 = 11,905.55 : x
  2. Step 2: Convert to fraction form
    19,286.67/28,947.83 = 11,905.55/x
  3. Step 3: Cross multiply
    19,286.67x = 28,947.83 × 11,905.55
  4. Step 4: Simplify right side
    19,286.67x = 344,639,837.46
  5. Step 5: Solve for x
    x = 344,639,837.46/19,286.67
  6. Step 6: Final answer
    x = 17,869.33

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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.