Home / 12,919,828.20-19,379,742.30-3,943,213.80

Finding the Fourth Proportional to 12,919,828.20, 19,379,742.30 and 3,943,213.80

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Solution

The fourth proportional to 12,919,828.20, 19,379,742.30 and 3,943,213.80 is: 5,914,820.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,919,828.20 : 19,379,742.30 = 3,943,213.80 : x
  2. Step 2: Convert to fraction form
    12,919,828.20/19,379,742.30 = 3,943,213.80/x
  3. Step 3: Cross multiply
    12,919,828.20x = 19,379,742.30 × 3,943,213.80
  4. Step 4: Simplify right side
    12,919,828.20x = 76,418,467,277,803.73
  5. Step 5: Solve for x
    x = 76,418,467,277,803.73/12,919,828.20
  6. Step 6: Final answer
    x = 5,914,820.70

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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.