Home / 20,469.16-28,245.47-11,519.81

Finding the Fourth Proportional to 20,469.16, 28,245.47 and 11,519.81

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Solution

The fourth proportional to 20,469.16, 28,245.47 and 11,519.81 is: 15,896.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,469.16 : 28,245.47 = 11,519.81 : x
  2. Step 2: Convert to fraction form
    20,469.16/28,245.47 = 11,519.81/x
  3. Step 3: Cross multiply
    20,469.16x = 28,245.47 × 11,519.81
  4. Step 4: Simplify right side
    20,469.16x = 325,382,447.76
  5. Step 5: Solve for x
    x = 325,382,447.76/20,469.16
  6. Step 6: Final answer
    x = 15,896.23

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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.