Home / 20,485,121.70-30,722,761.80-11,830,506.60

Finding the Fourth Proportional to 20,485,121.70, 30,722,761.80 and 11,830,506.60

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Solution

The fourth proportional to 20,485,121.70, 30,722,761.80 and 11,830,506.60 is: 17,742,918.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,485,121.70 : 30,722,761.80 = 11,830,506.60 : x
  2. Step 2: Convert to fraction form
    20,485,121.70/30,722,761.80 = 11,830,506.60/x
  3. Step 3: Cross multiply
    20,485,121.70x = 30,722,761.80 × 11,830,506.60
  4. Step 4: Simplify right side
    20,485,121.70x = 363,465,836,245,127.88
  5. Step 5: Solve for x
    x = 363,465,836,245,127.88/20,485,121.70
  6. Step 6: Final answer
    x = 17,742,918.08

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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.