Home / 38,986.40-53,801.19-21,081.37

Finding the Fourth Proportional to 38,986.40, 53,801.19 and 21,081.37

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Solution

The fourth proportional to 38,986.40, 53,801.19 and 21,081.37 is: 29,092.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,986.40 : 53,801.19 = 21,081.37 : x
  2. Step 2: Convert to fraction form
    38,986.40/53,801.19 = 21,081.37/x
  3. Step 3: Cross multiply
    38,986.40x = 53,801.19 × 21,081.37
  4. Step 4: Simplify right side
    38,986.40x = 1,134,202,523.82
  5. Step 5: Solve for x
    x = 1,134,202,523.82/38,986.40
  6. Step 6: Final answer
    x = 29,092.26

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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.