Home / 22,413.12-30,928.90-12,339.60

Finding the Fourth Proportional to 22,413.12, 30,928.90 and 12,339.60

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Solution

The fourth proportional to 22,413.12, 30,928.90 and 12,339.60 is: 17,027.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,413.12 : 30,928.90 = 12,339.60 : x
  2. Step 2: Convert to fraction form
    22,413.12/30,928.90 = 12,339.60/x
  3. Step 3: Cross multiply
    22,413.12x = 30,928.90 × 12,339.60
  4. Step 4: Simplify right side
    22,413.12x = 381,650,254.44
  5. Step 5: Solve for x
    x = 381,650,254.44/22,413.12
  6. Step 6: Final answer
    x = 17,027.98

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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.