Home / 38,986.06-53,789.52-21,989.44

Finding the Fourth Proportional to 38,986.06, 53,789.52 and 21,989.44

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Solution

The fourth proportional to 38,986.06, 53,789.52 and 21,989.44 is: 30,339.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,986.06 : 53,789.52 = 21,989.44 : x
  2. Step 2: Convert to fraction form
    38,986.06/53,789.52 = 21,989.44/x
  3. Step 3: Cross multiply
    38,986.06x = 53,789.52 × 21,989.44
  4. Step 4: Simplify right side
    38,986.06x = 1,182,801,422.67
  5. Step 5: Solve for x
    x = 1,182,801,422.67/38,986.06
  6. Step 6: Final answer
    x = 30,339.09

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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.