Home / 13,219.20-19,789.84-11,578.95

Finding the Fourth Proportional to 13,219.20, 19,789.84 and 11,578.95

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Solution

The fourth proportional to 13,219.20, 19,789.84 and 11,578.95 is: 17,334.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,219.20 : 19,789.84 = 11,578.95 : x
  2. Step 2: Convert to fraction form
    13,219.20/19,789.84 = 11,578.95/x
  3. Step 3: Cross multiply
    13,219.20x = 19,789.84 × 11,578.95
  4. Step 4: Simplify right side
    13,219.20x = 229,145,567.87
  5. Step 5: Solve for x
    x = 229,145,567.87/13,219.20
  6. Step 6: Final answer
    x = 17,334.30

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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.