Home / 38,986.05-53,800.77-21,081.07

Finding the Fourth Proportional to 38,986.05, 53,800.77 and 21,081.07

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Solution

The fourth proportional to 38,986.05, 53,800.77 and 21,081.07 is: 29,091.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,986.05 : 53,800.77 = 21,081.07 : x
  2. Step 2: Convert to fraction form
    38,986.05/53,800.77 = 21,081.07/x
  3. Step 3: Cross multiply
    38,986.05x = 53,800.77 × 21,081.07
  4. Step 4: Simplify right side
    38,986.05x = 1,134,177,944.73
  5. Step 5: Solve for x
    x = 1,134,177,944.73/38,986.05
  6. Step 6: Final answer
    x = 29,091.89

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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.