Home / 18,493.90-25,540.22-11,782.55

Finding the Fourth Proportional to 18,493.90, 25,540.22 and 11,782.55

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Solution

The fourth proportional to 18,493.90, 25,540.22 and 11,782.55 is: 16,271.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,493.90 : 25,540.22 = 11,782.55 : x
  2. Step 2: Convert to fraction form
    18,493.90/25,540.22 = 11,782.55/x
  3. Step 3: Cross multiply
    18,493.90x = 25,540.22 × 11,782.55
  4. Step 4: Simplify right side
    18,493.90x = 300,928,919.16
  5. Step 5: Solve for x
    x = 300,928,919.16/18,493.90
  6. Step 6: Final answer
    x = 16,271.79

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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.