Home / 12,774.08-19,161.12-5,378.38

Finding the Fourth Proportional to 12,774.08, 19,161.12 and 5,378.38

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Solution

The fourth proportional to 12,774.08, 19,161.12 and 5,378.38 is: 8,067.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,774.08 : 19,161.12 = 5,378.38 : x
  2. Step 2: Convert to fraction form
    12,774.08/19,161.12 = 5,378.38/x
  3. Step 3: Cross multiply
    12,774.08x = 19,161.12 × 5,378.38
  4. Step 4: Simplify right side
    12,774.08x = 103,055,784.59
  5. Step 5: Solve for x
    x = 103,055,784.59/12,774.08
  6. Step 6: Final answer
    x = 8,067.57

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Similar ratio
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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.