Home / 21,174.41-31,764.64-6,939.84

Finding the Fourth Proportional to 21,174.41, 31,764.64 and 6,939.84

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Solution

The fourth proportional to 21,174.41, 31,764.64 and 6,939.84 is: 10,410.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,174.41 : 31,764.64 = 6,939.84 : x
  2. Step 2: Convert to fraction form
    21,174.41/31,764.64 = 6,939.84/x
  3. Step 3: Cross multiply
    21,174.41x = 31,764.64 × 6,939.84
  4. Step 4: Simplify right side
    21,174.41x = 220,441,634.04
  5. Step 5: Solve for x
    x = 220,441,634.04/21,174.41
  6. Step 6: Final answer
    x = 10,410.76

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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.