Home / 18,831,085.80-28,239,630.30-7,469,183.40

Finding the Fourth Proportional to 18,831,085.80, 28,239,630.30 and 7,469,183.40

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Solution

The fourth proportional to 18,831,085.80, 28,239,630.30 and 7,469,183.40 is: 11,200,999.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,831,085.80 : 28,239,630.30 = 7,469,183.40 : x
  2. Step 2: Convert to fraction form
    18,831,085.80/28,239,630.30 = 7,469,183.40/x
  3. Step 3: Cross multiply
    18,831,085.80x = 28,239,630.30 × 7,469,183.40
  4. Step 4: Simplify right side
    18,831,085.80x = 210,926,977,858,897.03
  5. Step 5: Solve for x
    x = 210,926,977,858,897.03/18,831,085.80
  6. Step 6: Final answer
    x = 11,200,999.25

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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.