Home / 20,504,160.40-30,735,245.40-11,980,109.20

Finding the Fourth Proportional to 20,504,160.40, 30,735,245.40 and 11,980,109.20

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Solution

The fourth proportional to 20,504,160.40, 30,735,245.40 and 11,980,109.20 is: 17,957,896.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,504,160.40 : 30,735,245.40 = 11,980,109.20 : x
  2. Step 2: Convert to fraction form
    20,504,160.40/30,735,245.40 = 11,980,109.20/x
  3. Step 3: Cross multiply
    20,504,160.40x = 30,735,245.40 × 11,980,109.20
  4. Step 4: Simplify right side
    20,504,160.40x = 368,211,596,180,797.62
  5. Step 5: Solve for x
    x = 368,211,596,180,797.62/20,504,160.40
  6. Step 6: Final answer
    x = 17,957,896.79

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.