Home / 33,012.18-45,512.10-21,661.65

Finding the Fourth Proportional to 33,012.18, 45,512.10 and 21,661.65

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Solution

The fourth proportional to 33,012.18, 45,512.10 and 21,661.65 is: 29,863.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    33,012.18 : 45,512.10 = 21,661.65 : x
  2. Step 2: Convert to fraction form
    33,012.18/45,512.10 = 21,661.65/x
  3. Step 3: Cross multiply
    33,012.18x = 45,512.10 × 21,661.65
  4. Step 4: Simplify right side
    33,012.18x = 985,867,180.97
  5. Step 5: Solve for x
    x = 985,867,180.97/33,012.18
  6. Step 6: Final answer
    x = 29,863.74

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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.