Home / 18,517.80-25,556.58-11,809.56

Finding the Fourth Proportional to 18,517.80, 25,556.58 and 11,809.56

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Solution

The fourth proportional to 18,517.80, 25,556.58 and 11,809.56 is: 16,298.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,517.80 : 25,556.58 = 11,809.56 : x
  2. Step 2: Convert to fraction form
    18,517.80/25,556.58 = 11,809.56/x
  3. Step 3: Cross multiply
    18,517.80x = 25,556.58 × 11,809.56
  4. Step 4: Simplify right side
    18,517.80x = 301,811,964.90
  5. Step 5: Solve for x
    x = 301,811,964.90/18,517.80
  6. Step 6: Final answer
    x = 16,298.48

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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.