Home / 28,455.00-39,203.80-19,833.05

Finding the Fourth Proportional to 28,455.00, 39,203.80 and 19,833.05

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Solution

The fourth proportional to 28,455.00, 39,203.80 and 19,833.05 is: 27,324.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,455.00 : 39,203.80 = 19,833.05 : x
  2. Step 2: Convert to fraction form
    28,455.00/39,203.80 = 19,833.05/x
  3. Step 3: Cross multiply
    28,455.00x = 39,203.80 × 19,833.05
  4. Step 4: Simplify right side
    28,455.00x = 777,530,974.02
  5. Step 5: Solve for x
    x = 777,530,974.02/28,455.00
  6. Step 6: Final answer
    x = 27,324.94

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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.