Home / 39,859.11-55,005.99-21,954.69

Finding the Fourth Proportional to 39,859.11, 55,005.99 and 21,954.69

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Solution

The fourth proportional to 39,859.11, 55,005.99 and 21,954.69 is: 30,297.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,859.11 : 55,005.99 = 21,954.69 : x
  2. Step 2: Convert to fraction form
    39,859.11/55,005.99 = 21,954.69/x
  3. Step 3: Cross multiply
    39,859.11x = 55,005.99 × 21,954.69
  4. Step 4: Simplify right side
    39,859.11x = 1,207,639,458.59
  5. Step 5: Solve for x
    x = 1,207,639,458.59/39,859.11
  6. Step 6: Final answer
    x = 30,297.70

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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.