Home / 11,131.53-15,356.30-6,413.09

Finding the Fourth Proportional to 11,131.53, 15,356.30 and 6,413.09

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Solution

The fourth proportional to 11,131.53, 15,356.30 and 6,413.09 is: 8,847.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,131.53 : 15,356.30 = 6,413.09 : x
  2. Step 2: Convert to fraction form
    11,131.53/15,356.30 = 6,413.09/x
  3. Step 3: Cross multiply
    11,131.53x = 15,356.30 × 6,413.09
  4. Step 4: Simplify right side
    11,131.53x = 98,481,225.12
  5. Step 5: Solve for x
    x = 98,481,225.12/11,131.53
  6. Step 6: Final answer
    x = 8,847.05

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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.