Home / 21,255.26-31,887.21-7,413.98

Finding the Fourth Proportional to 21,255.26, 31,887.21 and 7,413.98

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Solution

The fourth proportional to 21,255.26, 31,887.21 and 7,413.98 is: 11,122.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,255.26 : 31,887.21 = 7,413.98 : x
  2. Step 2: Convert to fraction form
    21,255.26/31,887.21 = 7,413.98/x
  3. Step 3: Cross multiply
    21,255.26x = 31,887.21 × 7,413.98
  4. Step 4: Simplify right side
    21,255.26x = 236,411,137.20
  5. Step 5: Solve for x
    x = 236,411,137.20/21,255.26
  6. Step 6: Final answer
    x = 11,122.48

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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.