Home / 11,515.20-17,272.80-3,197.31

Finding the Fourth Proportional to 11,515.20, 17,272.80 and 3,197.31

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Solution

The fourth proportional to 11,515.20, 17,272.80 and 3,197.31 is: 4,795.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,515.20 : 17,272.80 = 3,197.31 : x
  2. Step 2: Convert to fraction form
    11,515.20/17,272.80 = 3,197.31/x
  3. Step 3: Cross multiply
    11,515.20x = 17,272.80 × 3,197.31
  4. Step 4: Simplify right side
    11,515.20x = 55,226,431.40
  5. Step 5: Solve for x
    x = 55,226,431.40/11,515.20
  6. Step 6: Final answer
    x = 4,795.96

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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.