Home / 18,990.09-28,453.41-15,668.64

Finding the Fourth Proportional to 18,990.09, 28,453.41 and 15,668.64

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Solution

The fourth proportional to 18,990.09, 28,453.41 and 15,668.64 is: 23,476.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,990.09 : 28,453.41 = 15,668.64 : x
  2. Step 2: Convert to fraction form
    18,990.09/28,453.41 = 15,668.64/x
  3. Step 3: Cross multiply
    18,990.09x = 28,453.41 × 15,668.64
  4. Step 4: Simplify right side
    18,990.09x = 445,826,238.06
  5. Step 5: Solve for x
    x = 445,826,238.06/18,990.09
  6. Step 6: Final answer
    x = 23,476.78

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.