Home / 20,419,915.86-30,629,762.81-11,778,414.66

Finding the Fourth Proportional to 20,419,915.86, 30,629,762.81 and 11,778,414.66

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Solution

The fourth proportional to 20,419,915.86, 30,629,762.81 and 11,778,414.66 is: 17,667,557.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,419,915.86 : 30,629,762.81 = 11,778,414.66 : x
  2. Step 2: Convert to fraction form
    20,419,915.86/30,629,762.81 = 11,778,414.66/x
  3. Step 3: Cross multiply
    20,419,915.86x = 30,629,762.81 × 11,778,414.66
  4. Step 4: Simplify right side
    20,419,915.86x = 360,770,047,313,626.81
  5. Step 5: Solve for x
    x = 360,770,047,313,626.81/20,419,915.86
  6. Step 6: Final answer
    x = 17,667,557.98

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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.