Home / 18,511.85-25,519.78-13,197.44

Finding the Fourth Proportional to 18,511.85, 25,519.78 and 13,197.44

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Solution

The fourth proportional to 18,511.85, 25,519.78 and 13,197.44 is: 18,193.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,511.85 : 25,519.78 = 13,197.44 : x
  2. Step 2: Convert to fraction form
    18,511.85/25,519.78 = 13,197.44/x
  3. Step 3: Cross multiply
    18,511.85x = 25,519.78 × 13,197.44
  4. Step 4: Simplify right side
    18,511.85x = 336,795,796.17
  5. Step 5: Solve for x
    x = 336,795,796.17/18,511.85
  6. Step 6: Final answer
    x = 18,193.52

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.