Home / 13,786.58-20,680.10-3,926.12

Finding the Fourth Proportional to 13,786.58, 20,680.10 and 3,926.12

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Solution

The fourth proportional to 13,786.58, 20,680.10 and 3,926.12 is: 5,889.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,786.58 : 20,680.10 = 3,926.12 : x
  2. Step 2: Convert to fraction form
    13,786.58/20,680.10 = 3,926.12/x
  3. Step 3: Cross multiply
    13,786.58x = 20,680.10 × 3,926.12
  4. Step 4: Simplify right side
    13,786.58x = 81,192,554.21
  5. Step 5: Solve for x
    x = 81,192,554.21/13,786.58
  6. Step 6: Final answer
    x = 5,889.25

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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.