Home / 12,232.26-16,879.34-9,720.45

Finding the Fourth Proportional to 12,232.26, 16,879.34 and 9,720.45

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Solution

The fourth proportional to 12,232.26, 16,879.34 and 9,720.45 is: 13,413.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,232.26 : 16,879.34 = 9,720.45 : x
  2. Step 2: Convert to fraction form
    12,232.26/16,879.34 = 9,720.45/x
  3. Step 3: Cross multiply
    12,232.26x = 16,879.34 × 9,720.45
  4. Step 4: Simplify right side
    12,232.26x = 164,074,804.80
  5. Step 5: Solve for x
    x = 164,074,804.80/12,232.26
  6. Step 6: Final answer
    x = 13,413.29

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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.