Home / 33,146.20-45,756.72-21,821.64

Finding the Fourth Proportional to 33,146.20, 45,756.72 and 21,821.64

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Solution

The fourth proportional to 33,146.20, 45,756.72 and 21,821.64 is: 30,123.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    33,146.20 : 45,756.72 = 21,821.64 : x
  2. Step 2: Convert to fraction form
    33,146.20/45,756.72 = 21,821.64/x
  3. Step 3: Cross multiply
    33,146.20x = 45,756.72 × 21,821.64
  4. Step 4: Simplify right side
    33,146.20x = 998,486,671.42
  5. Step 5: Solve for x
    x = 998,486,671.42/33,146.20
  6. Step 6: Final answer
    x = 30,123.71

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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.