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Finding the Fourth Proportional to 18,675.84, 25,737.18 and 13,361.43

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Solution

The fourth proportional to 18,675.84, 25,737.18 and 13,361.43 is: 18,413.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,675.84 : 25,737.18 = 13,361.43 : x
  2. Step 2: Convert to fraction form
    18,675.84/25,737.18 = 13,361.43/x
  3. Step 3: Cross multiply
    18,675.84x = 25,737.18 × 13,361.43
  4. Step 4: Simplify right side
    18,675.84x = 343,885,528.97
  5. Step 5: Solve for x
    x = 343,885,528.97/18,675.84
  6. Step 6: Final answer
    x = 18,413.39

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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.