Home / 20,511,736.28-30,756,245.69-8,389,712.06

Finding the Fourth Proportional to 20,511,736.28, 30,756,245.69 and 8,389,712.06

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Solution

The fourth proportional to 20,511,736.28, 30,756,245.69 and 8,389,712.06 is: 12,579,922.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,511,736.28 : 30,756,245.69 = 8,389,712.06 : x
  2. Step 2: Convert to fraction form
    20,511,736.28/30,756,245.69 = 8,389,712.06/x
  3. Step 3: Cross multiply
    20,511,736.28x = 30,756,245.69 × 8,389,712.06
  4. Step 4: Simplify right side
    20,511,736.28x = 258,036,045,483,580.91
  5. Step 5: Solve for x
    x = 258,036,045,483,580.91/20,511,736.28
  6. Step 6: Final answer
    x = 12,579,922.14

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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.