Home / 33,180.45-45,785.70-20,431.59

Finding the Fourth Proportional to 33,180.45, 45,785.70 and 20,431.59

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Solution

The fourth proportional to 33,180.45, 45,785.70 and 20,431.59 is: 28,193.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    33,180.45 : 45,785.70 = 20,431.59 : x
  2. Step 2: Convert to fraction form
    33,180.45/45,785.70 = 20,431.59/x
  3. Step 3: Cross multiply
    33,180.45x = 45,785.70 × 20,431.59
  4. Step 4: Simplify right side
    33,180.45x = 935,474,650.26
  5. Step 5: Solve for x
    x = 935,474,650.26/33,180.45
  6. Step 6: Final answer
    x = 28,193.55

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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.