Home / 33,189.28-45,804.80-20,441.76

Finding the Fourth Proportional to 33,189.28, 45,804.80 and 20,441.76

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Solution

The fourth proportional to 33,189.28, 45,804.80 and 20,441.76 is: 28,211.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    33,189.28 : 45,804.80 = 20,441.76 : x
  2. Step 2: Convert to fraction form
    33,189.28/45,804.80 = 20,441.76/x
  3. Step 3: Cross multiply
    33,189.28x = 45,804.80 × 20,441.76
  4. Step 4: Simplify right side
    33,189.28x = 936,330,728.45
  5. Step 5: Solve for x
    x = 936,330,728.45/33,189.28
  6. Step 6: Final answer
    x = 28,211.84

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Double scale
Find fourth proportional to 33,190.28, 45,806.18 and 20,442.76
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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.