Home / 12,774.21-19,161.32-3,540.21

Finding the Fourth Proportional to 12,774.21, 19,161.32 and 3,540.21

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Solution

The fourth proportional to 12,774.21, 19,161.32 and 3,540.21 is: 5,310.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,774.21 : 19,161.32 = 3,540.21 : x
  2. Step 2: Convert to fraction form
    12,774.21/19,161.32 = 3,540.21/x
  3. Step 3: Cross multiply
    12,774.21x = 19,161.32 × 3,540.21
  4. Step 4: Simplify right side
    12,774.21x = 67,834,983.17
  5. Step 5: Solve for x
    x = 67,834,983.17/12,774.21
  6. Step 6: Final answer
    x = 5,310.31

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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.