Home / 13,895.78-19,163.21-12,863.70

Finding the Fourth Proportional to 13,895.78, 19,163.21 and 12,863.70

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Solution

The fourth proportional to 13,895.78, 19,163.21 and 12,863.70 is: 17,739.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,895.78 : 19,163.21 = 12,863.70 : x
  2. Step 2: Convert to fraction form
    13,895.78/19,163.21 = 12,863.70/x
  3. Step 3: Cross multiply
    13,895.78x = 19,163.21 × 12,863.70
  4. Step 4: Simplify right side
    13,895.78x = 246,509,774.80
  5. Step 5: Solve for x
    x = 246,509,774.80/13,895.78
  6. Step 6: Final answer
    x = 17,739.91

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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.