Home / 21,266.22-31,879.59-9,413.67

Finding the Fourth Proportional to 21,266.22, 31,879.59 and 9,413.67

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Solution

The fourth proportional to 21,266.22, 31,879.59 and 9,413.67 is: 14,111.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,266.22 : 31,879.59 = 9,413.67 : x
  2. Step 2: Convert to fraction form
    21,266.22/31,879.59 = 9,413.67/x
  3. Step 3: Cross multiply
    21,266.22x = 31,879.59 × 9,413.67
  4. Step 4: Simplify right side
    21,266.22x = 300,103,940.00
  5. Step 5: Solve for x
    x = 300,103,940.00/21,266.22
  6. Step 6: Final answer
    x = 14,111.77

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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.