Home / 18,668,115.10-28,002,172.65-15,479,469.10

Finding the Fourth Proportional to 18,668,115.10, 28,002,172.65 and 15,479,469.10

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Solution

The fourth proportional to 18,668,115.10, 28,002,172.65 and 15,479,469.10 is: 23,219,203.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,668,115.10 : 28,002,172.65 = 15,479,469.10 : x
  2. Step 2: Convert to fraction form
    18,668,115.10/28,002,172.65 = 15,479,469.10/x
  3. Step 3: Cross multiply
    18,668,115.10x = 28,002,172.65 × 15,479,469.10
  4. Step 4: Simplify right side
    18,668,115.10x = 433,458,766,268,540.06
  5. Step 5: Solve for x
    x = 433,458,766,268,540.06/18,668,115.10
  6. Step 6: Final answer
    x = 23,219,203.65

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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.