Home / 12,645,964.86-18,968,960.97-5,919,102.78

Finding the Fourth Proportional to 12,645,964.86, 18,968,960.97 and 5,919,102.78

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Solution

The fourth proportional to 12,645,964.86, 18,968,960.97 and 5,919,102.78 is: 8,878,660.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,645,964.86 : 18,968,960.97 = 5,919,102.78 : x
  2. Step 2: Convert to fraction form
    12,645,964.86/18,968,960.97 = 5,919,102.78/x
  3. Step 3: Cross multiply
    12,645,964.86x = 18,968,960.97 × 5,919,102.78
  4. Step 4: Simplify right side
    12,645,964.86x = 112,279,229,611,238.50
  5. Step 5: Solve for x
    x = 112,279,229,611,238.50/12,645,964.86
  6. Step 6: Final answer
    x = 8,878,660.57

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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.