Home / 21,201,672.20-31,808,413.20-10,419,324.80

Finding the Fourth Proportional to 21,201,672.20, 31,808,413.20 and 10,419,324.80

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Solution

The fourth proportional to 21,201,672.20, 31,808,413.20 and 10,419,324.80 is: 15,631,889.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,201,672.20 : 31,808,413.20 = 10,419,324.80 : x
  2. Step 2: Convert to fraction form
    21,201,672.20/31,808,413.20 = 10,419,324.80/x
  3. Step 3: Cross multiply
    21,201,672.20x = 31,808,413.20 × 10,419,324.80
  4. Step 4: Simplify right side
    21,201,672.20x = 331,422,188,503,407.38
  5. Step 5: Solve for x
    x = 331,422,188,503,407.38/21,201,672.20
  6. Step 6: Final answer
    x = 15,631,889.10

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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.