Home / 15,413.58-21,270.75-8,339.98

Finding the Fourth Proportional to 15,413.58, 21,270.75 and 8,339.98

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Solution

The fourth proportional to 15,413.58, 21,270.75 and 8,339.98 is: 11,509.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,413.58 : 21,270.75 = 8,339.98 : x
  2. Step 2: Convert to fraction form
    15,413.58/21,270.75 = 8,339.98/x
  3. Step 3: Cross multiply
    15,413.58x = 21,270.75 × 8,339.98
  4. Step 4: Simplify right side
    15,413.58x = 177,397,629.59
  5. Step 5: Solve for x
    x = 177,397,629.59/15,413.58
  6. Step 6: Final answer
    x = 11,509.18

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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.