Home / 13,171.87-19,785.36-11,197.19

Finding the Fourth Proportional to 13,171.87, 19,785.36 and 11,197.19

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Solution

The fourth proportional to 13,171.87, 19,785.36 and 11,197.19 is: 16,819.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,171.87 : 19,785.36 = 11,197.19 : x
  2. Step 2: Convert to fraction form
    13,171.87/19,785.36 = 11,197.19/x
  3. Step 3: Cross multiply
    13,171.87x = 19,785.36 × 11,197.19
  4. Step 4: Simplify right side
    13,171.87x = 221,540,415.30
  5. Step 5: Solve for x
    x = 221,540,415.30/13,171.87
  6. Step 6: Final answer
    x = 16,819.21

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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.