Home / 20,556,690.78-30,823,083.96-7,778,181

Finding the Fourth Proportional to 20,556,690.78, 30,823,083.96 and 7,778,181

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Solution

The fourth proportional to 20,556,690.78, 30,823,083.96 and 7,778,181 is: 11,662,749.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,556,690.78 : 30,823,083.96 = 7,778,181 : x
  2. Step 2: Convert to fraction form
    20,556,690.78/30,823,083.96 = 7,778,181/x
  3. Step 3: Cross multiply
    20,556,690.78x = 30,823,083.96 × 7,778,181
  4. Step 4: Simplify right side
    20,556,690.78x = 239,747,526,019,076.78
  5. Step 5: Solve for x
    x = 239,747,526,019,076.78/20,556,690.78
  6. Step 6: Final answer
    x = 11,662,749.06

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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.