Home / 12,806.91-19,206.72-8,119.85

Finding the Fourth Proportional to 12,806.91, 19,206.72 and 8,119.85

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Solution

The fourth proportional to 12,806.91, 19,206.72 and 8,119.85 is: 12,177.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,806.91 : 19,206.72 = 8,119.85 : x
  2. Step 2: Convert to fraction form
    12,806.91/19,206.72 = 8,119.85/x
  3. Step 3: Cross multiply
    12,806.91x = 19,206.72 × 8,119.85
  4. Step 4: Simplify right side
    12,806.91x = 155,955,589.36
  5. Step 5: Solve for x
    x = 155,955,589.36/12,806.91
  6. Step 6: Final answer
    x = 12,177.46

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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.