Home / 18,540.78-25,559.49-13,226.37

Finding the Fourth Proportional to 18,540.78, 25,559.49 and 13,226.37

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Solution

The fourth proportional to 18,540.78, 25,559.49 and 13,226.37 is: 18,233.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,540.78 : 25,559.49 = 13,226.37 : x
  2. Step 2: Convert to fraction form
    18,540.78/25,559.49 = 13,226.37/x
  3. Step 3: Cross multiply
    18,540.78x = 25,559.49 × 13,226.37
  4. Step 4: Simplify right side
    18,540.78x = 338,059,271.75
  5. Step 5: Solve for x
    x = 338,059,271.75/18,540.78
  6. Step 6: Final answer
    x = 18,233.28

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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.