Home / 18,786.82-25,926.10-10,288.78

Finding the Fourth Proportional to 18,786.82, 25,926.10 and 10,288.78

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Solution

The fourth proportional to 18,786.82, 25,926.10 and 10,288.78 is: 14,198.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,786.82 : 25,926.10 = 10,288.78 : x
  2. Step 2: Convert to fraction form
    18,786.82/25,926.10 = 10,288.78/x
  3. Step 3: Cross multiply
    18,786.82x = 25,926.10 × 10,288.78
  4. Step 4: Simplify right side
    18,786.82x = 266,747,939.16
  5. Step 5: Solve for x
    x = 266,747,939.16/18,786.82
  6. Step 6: Final answer
    x = 14,198.67

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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.