Home / 12,876.26-19,311.80-3,515.49

Finding the Fourth Proportional to 12,876.26, 19,311.80 and 3,515.49

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Solution

The fourth proportional to 12,876.26, 19,311.80 and 3,515.49 is: 5,272.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,876.26 : 19,311.80 = 3,515.49 : x
  2. Step 2: Convert to fraction form
    12,876.26/19,311.80 = 3,515.49/x
  3. Step 3: Cross multiply
    12,876.26x = 19,311.80 × 3,515.49
  4. Step 4: Simplify right side
    12,876.26x = 67,890,422.20
  5. Step 5: Solve for x
    x = 67,890,422.20/12,876.26
  6. Step 6: Final answer
    x = 5,272.53

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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.