Home / 11,871.45-17,811.30-4,478.04

Finding the Fourth Proportional to 11,871.45, 17,811.30 and 4,478.04

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Solution

The fourth proportional to 11,871.45, 17,811.30 and 4,478.04 is: 6,718.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,871.45 : 17,811.30 = 4,478.04 : x
  2. Step 2: Convert to fraction form
    11,871.45/17,811.30 = 4,478.04/x
  3. Step 3: Cross multiply
    11,871.45x = 17,811.30 × 4,478.04
  4. Step 4: Simplify right side
    11,871.45x = 79,759,713.85
  5. Step 5: Solve for x
    x = 79,759,713.85/11,871.45
  6. Step 6: Final answer
    x = 6,718.62

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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.