Home / 21,287,629.78-31,939,729.30-8,511,788.14

Finding the Fourth Proportional to 21,287,629.78, 31,939,729.30 and 8,511,788.14

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Solution

The fourth proportional to 21,287,629.78, 31,939,729.30 and 8,511,788.14 is: 12,770,994.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,287,629.78 : 31,939,729.30 = 8,511,788.14 : x
  2. Step 2: Convert to fraction form
    21,287,629.78/31,939,729.30 = 8,511,788.14/x
  3. Step 3: Cross multiply
    21,287,629.78x = 31,939,729.30 × 8,511,788.14
  4. Step 4: Simplify right side
    21,287,629.78x = 271,864,209,050,550.53
  5. Step 5: Solve for x
    x = 271,864,209,050,550.53/21,287,629.78
  6. Step 6: Final answer
    x = 12,770,994.79

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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.