Home / 39,718.38-54,811.34-21,814.51

Finding the Fourth Proportional to 39,718.38, 54,811.34 and 21,814.51

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Solution

The fourth proportional to 39,718.38, 54,811.34 and 21,814.51 is: 30,104.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,718.38 : 54,811.34 = 21,814.51 : x
  2. Step 2: Convert to fraction form
    39,718.38/54,811.34 = 21,814.51/x
  3. Step 3: Cross multiply
    39,718.38x = 54,811.34 × 21,814.51
  4. Step 4: Simplify right side
    39,718.38x = 1,195,682,524.54
  5. Step 5: Solve for x
    x = 1,195,682,524.54/39,718.38
  6. Step 6: Final answer
    x = 30,104.01

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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.