Home / 20,419,915.38-30,629,762.09-11,778,414.18

Finding the Fourth Proportional to 20,419,915.38, 30,629,762.09 and 11,778,414.18

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Solution

The fourth proportional to 20,419,915.38, 30,629,762.09 and 11,778,414.18 is: 17,667,557.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,419,915.38 : 30,629,762.09 = 11,778,414.18 : x
  2. Step 2: Convert to fraction form
    20,419,915.38/30,629,762.09 = 11,778,414.18/x
  3. Step 3: Cross multiply
    20,419,915.38x = 30,629,762.09 × 11,778,414.18
  4. Step 4: Simplify right side
    20,419,915.38x = 360,770,024,071,990.38
  5. Step 5: Solve for x
    x = 360,770,024,071,990.38/20,419,915.38
  6. Step 6: Final answer
    x = 17,667,557.25

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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.