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Finding the Fourth Proportional to 31,843.85, 43,941.02 and 18,413.07

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Solution

The fourth proportional to 31,843.85, 43,941.02 and 18,413.07 is: 25,408.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,843.85 : 43,941.02 = 18,413.07 : x
  2. Step 2: Convert to fraction form
    31,843.85/43,941.02 = 18,413.07/x
  3. Step 3: Cross multiply
    31,843.85x = 43,941.02 × 18,413.07
  4. Step 4: Simplify right side
    31,843.85x = 809,088,985.07
  5. Step 5: Solve for x
    x = 809,088,985.07/31,843.85
  6. Step 6: Final answer
    x = 25,408.01

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.