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Finding the Fourth Proportional to 18,413.74, 27,599.18 and 10,521.78

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Solution

The fourth proportional to 18,413.74, 27,599.18 and 10,521.78 is: 15,770.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,413.74 : 27,599.18 = 10,521.78 : x
  2. Step 2: Convert to fraction form
    18,413.74/27,599.18 = 10,521.78/x
  3. Step 3: Cross multiply
    18,413.74x = 27,599.18 × 10,521.78
  4. Step 4: Simplify right side
    18,413.74x = 290,392,629.94
  5. Step 5: Solve for x
    x = 290,392,629.94/18,413.74
  6. Step 6: Final answer
    x = 15,770.44

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1.5x scale

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.