Home / 13,910.87-19,185.83-12,228.71

Finding the Fourth Proportional to 13,910.87, 19,185.83 and 12,228.71

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Solution

The fourth proportional to 13,910.87, 19,185.83 and 12,228.71 is: 16,865.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,910.87 : 19,185.83 = 12,228.71 : x
  2. Step 2: Convert to fraction form
    13,910.87/19,185.83 = 12,228.71/x
  3. Step 3: Cross multiply
    13,910.87x = 19,185.83 × 12,228.71
  4. Step 4: Simplify right side
    13,910.87x = 234,617,794.11
  5. Step 5: Solve for x
    x = 234,617,794.11/13,910.87
  6. Step 6: Final answer
    x = 16,865.79

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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.