Home / 38,986.73-53,801.62-21,990.92

Finding the Fourth Proportional to 38,986.73, 53,801.62 and 21,990.92

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Solution

The fourth proportional to 38,986.73, 53,801.62 and 21,990.92 is: 30,347.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,986.73 : 53,801.62 = 21,990.92 : x
  2. Step 2: Convert to fraction form
    38,986.73/53,801.62 = 21,990.92/x
  3. Step 3: Cross multiply
    38,986.73x = 53,801.62 × 21,990.92
  4. Step 4: Simplify right side
    38,986.73x = 1,183,147,258.02
  5. Step 5: Solve for x
    x = 1,183,147,258.02/38,986.73
  6. Step 6: Final answer
    x = 30,347.43

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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.