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Finding the Fourth Proportional to 30,787.31, 46,180.98 and 7,413.75

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Solution

The fourth proportional to 30,787.31, 46,180.98 and 7,413.75 is: 11,120.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,787.31 : 46,180.98 = 7,413.75 : x
  2. Step 2: Convert to fraction form
    30,787.31/46,180.98 = 7,413.75/x
  3. Step 3: Cross multiply
    30,787.31x = 46,180.98 × 7,413.75
  4. Step 4: Simplify right side
    30,787.31x = 342,374,240.48
  5. Step 5: Solve for x
    x = 342,374,240.48/30,787.31
  6. Step 6: Final answer
    x = 11,120.63

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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.