Home / 20,629.12-30,941.22-8,943.28

Finding the Fourth Proportional to 20,629.12, 30,941.22 and 8,943.28

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Solution

The fourth proportional to 20,629.12, 30,941.22 and 8,943.28 is: 13,413.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,629.12 : 30,941.22 = 8,943.28 : x
  2. Step 2: Convert to fraction form
    20,629.12/30,941.22 = 8,943.28/x
  3. Step 3: Cross multiply
    20,629.12x = 30,941.22 × 8,943.28
  4. Step 4: Simplify right side
    20,629.12x = 276,715,994.00
  5. Step 5: Solve for x
    x = 276,715,994.00/20,629.12
  6. Step 6: Final answer
    x = 13,413.85

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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.