Home / 11,955.36-17,931.72-3,191.04

Finding the Fourth Proportional to 11,955.36, 17,931.72 and 3,191.04

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Solution

The fourth proportional to 11,955.36, 17,931.72 and 3,191.04 is: 4,786.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,955.36 : 17,931.72 = 3,191.04 : x
  2. Step 2: Convert to fraction form
    11,955.36/17,931.72 = 3,191.04/x
  3. Step 3: Cross multiply
    11,955.36x = 17,931.72 × 3,191.04
  4. Step 4: Simplify right side
    11,955.36x = 57,220,835.79
  5. Step 5: Solve for x
    x = 57,220,835.79/11,955.36
  6. Step 6: Final answer
    x = 4,786.21

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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.