Home / 20,940.46-31,406.94-6,900.66

Finding the Fourth Proportional to 20,940.46, 31,406.94 and 6,900.66

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Solution

The fourth proportional to 20,940.46, 31,406.94 and 6,900.66 is: 10,349.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,940.46 : 31,406.94 = 6,900.66 : x
  2. Step 2: Convert to fraction form
    20,940.46/31,406.94 = 6,900.66/x
  3. Step 3: Cross multiply
    20,940.46x = 31,406.94 × 6,900.66
  4. Step 4: Simplify right side
    20,940.46x = 216,728,614.58
  5. Step 5: Solve for x
    x = 216,728,614.58/20,940.46
  6. Step 6: Final answer
    x = 10,349.76

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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.