Home / 11,161.57-15,413.34-7,189.51

Finding the Fourth Proportional to 11,161.57, 15,413.34 and 7,189.51

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Solution

The fourth proportional to 11,161.57, 15,413.34 and 7,189.51 is: 9,928.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,161.57 : 15,413.34 = 7,189.51 : x
  2. Step 2: Convert to fraction form
    11,161.57/15,413.34 = 7,189.51/x
  3. Step 3: Cross multiply
    11,161.57x = 15,413.34 × 7,189.51
  4. Step 4: Simplify right side
    11,161.57x = 110,814,362.06
  5. Step 5: Solve for x
    x = 110,814,362.06/11,161.57
  6. Step 6: Final answer
    x = 9,928.21

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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.