Home / 18,907,189.80-28,360,784.70-12,450,181.65

Finding the Fourth Proportional to 18,907,189.80, 28,360,784.70 and 12,450,181.65

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Solution

The fourth proportional to 18,907,189.80, 28,360,784.70 and 12,450,181.65 is: 18,675,272.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,907,189.80 : 28,360,784.70 = 12,450,181.65 : x
  2. Step 2: Convert to fraction form
    18,907,189.80/28,360,784.70 = 12,450,181.65/x
  3. Step 3: Cross multiply
    18,907,189.80x = 28,360,784.70 × 12,450,181.65
  4. Step 4: Simplify right side
    18,907,189.80x = 353,096,921,251,540.75
  5. Step 5: Solve for x
    x = 353,096,921,251,540.75/18,907,189.80
  6. Step 6: Final answer
    x = 18,675,272.48

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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.