Home / 12,811.08-19,216.38-5,786.04

Finding the Fourth Proportional to 12,811.08, 19,216.38 and 5,786.04

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Solution

The fourth proportional to 12,811.08, 19,216.38 and 5,786.04 is: 8,678.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,811.08 : 19,216.38 = 5,786.04 : x
  2. Step 2: Convert to fraction form
    12,811.08/19,216.38 = 5,786.04/x
  3. Step 3: Cross multiply
    12,811.08x = 19,216.38 × 5,786.04
  4. Step 4: Simplify right side
    12,811.08x = 111,186,743.34
  5. Step 5: Solve for x
    x = 111,186,743.34/12,811.08
  6. Step 6: Final answer
    x = 8,678.95

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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.