Home / 11,955.72-17,932.32-3,191.40

Finding the Fourth Proportional to 11,955.72, 17,932.32 and 3,191.40

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Solution

The fourth proportional to 11,955.72, 17,932.32 and 3,191.40 is: 4,786.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,955.72 : 17,932.32 = 3,191.40 : x
  2. Step 2: Convert to fraction form
    11,955.72/17,932.32 = 3,191.40/x
  3. Step 3: Cross multiply
    11,955.72x = 17,932.32 × 3,191.40
  4. Step 4: Simplify right side
    11,955.72x = 57,229,206.05
  5. Step 5: Solve for x
    x = 57,229,206.05/11,955.72
  6. Step 6: Final answer
    x = 4,786.76

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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.