Home / 18,513.21-25,521.66-13,198.80

Finding the Fourth Proportional to 18,513.21, 25,521.66 and 13,198.80

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Solution

The fourth proportional to 18,513.21, 25,521.66 and 13,198.80 is: 18,195.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,513.21 : 25,521.66 = 13,198.80 : x
  2. Step 2: Convert to fraction form
    18,513.21/25,521.66 = 13,198.80/x
  3. Step 3: Cross multiply
    18,513.21x = 25,521.66 × 13,198.80
  4. Step 4: Simplify right side
    18,513.21x = 336,855,286.01
  5. Step 5: Solve for x
    x = 336,855,286.01/18,513.21
  6. Step 6: Final answer
    x = 18,195.40

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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.