Home / 20,786.12-31,174.32-6,935.12

Finding the Fourth Proportional to 20,786.12, 31,174.32 and 6,935.12

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Solution

The fourth proportional to 20,786.12, 31,174.32 and 6,935.12 is: 10,401.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,786.12 : 31,174.32 = 6,935.12 : x
  2. Step 2: Convert to fraction form
    20,786.12/31,174.32 = 6,935.12/x
  3. Step 3: Cross multiply
    20,786.12x = 31,174.32 × 6,935.12
  4. Step 4: Simplify right side
    20,786.12x = 216,197,650.12
  5. Step 5: Solve for x
    x = 216,197,650.12/20,786.12
  6. Step 6: Final answer
    x = 10,401.06

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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.