Home / 38,629.56-57,981.78-18,653.13

Finding the Fourth Proportional to 38,629.56, 57,981.78 and 18,653.13

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Solution

The fourth proportional to 38,629.56, 57,981.78 and 18,653.13 is: 27,997.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,629.56 : 57,981.78 = 18,653.13 : x
  2. Step 2: Convert to fraction form
    38,629.56/57,981.78 = 18,653.13/x
  3. Step 3: Cross multiply
    38,629.56x = 57,981.78 × 18,653.13
  4. Step 4: Simplify right side
    38,629.56x = 1,081,541,679.97
  5. Step 5: Solve for x
    x = 1,081,541,679.97/38,629.56
  6. Step 6: Final answer
    x = 27,997.77

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.