Home / 10,857.83-16,286.63-8,680.37

Finding the Fourth Proportional to 10,857.83, 16,286.63 and 8,680.37

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Solution

The fourth proportional to 10,857.83, 16,286.63 and 8,680.37 is: 13,020.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,857.83 : 16,286.63 = 8,680.37 : x
  2. Step 2: Convert to fraction form
    10,857.83/16,286.63 = 8,680.37/x
  3. Step 3: Cross multiply
    10,857.83x = 16,286.63 × 8,680.37
  4. Step 4: Simplify right side
    10,857.83x = 141,373,849.62
  5. Step 5: Solve for x
    x = 141,373,849.62/10,857.83
  6. Step 6: Final answer
    x = 13,020.46

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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.