Home / 33,128.21-45,718.13-18,983.79

Finding the Fourth Proportional to 33,128.21, 45,718.13 and 18,983.79

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Solution

The fourth proportional to 33,128.21, 45,718.13 and 18,983.79 is: 26,198.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    33,128.21 : 45,718.13 = 18,983.79 : x
  2. Step 2: Convert to fraction form
    33,128.21/45,718.13 = 18,983.79/x
  3. Step 3: Cross multiply
    33,128.21x = 45,718.13 × 18,983.79
  4. Step 4: Simplify right side
    33,128.21x = 867,903,426.57
  5. Step 5: Solve for x
    x = 867,903,426.57/33,128.21
  6. Step 6: Final answer
    x = 26,198.32

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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.