Home / 28,947.78-39,924.90-19,993.23

Finding the Fourth Proportional to 28,947.78, 39,924.90 and 19,993.23

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Solution

The fourth proportional to 28,947.78, 39,924.90 and 19,993.23 is: 27,574.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,947.78 : 39,924.90 = 19,993.23 : x
  2. Step 2: Convert to fraction form
    28,947.78/39,924.90 = 19,993.23/x
  3. Step 3: Cross multiply
    28,947.78x = 39,924.90 × 19,993.23
  4. Step 4: Simplify right side
    28,947.78x = 798,227,708.43
  5. Step 5: Solve for x
    x = 798,227,708.43/28,947.78
  6. Step 6: Final answer
    x = 27,574.75

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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.