Home / 18,515.91-25,544.82-12,847.83

Finding the Fourth Proportional to 18,515.91, 25,544.82 and 12,847.83

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Solution

The fourth proportional to 18,515.91, 25,544.82 and 12,847.83 is: 17,725.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,515.91 : 25,544.82 = 12,847.83 : x
  2. Step 2: Convert to fraction form
    18,515.91/25,544.82 = 12,847.83/x
  3. Step 3: Cross multiply
    18,515.91x = 25,544.82 × 12,847.83
  4. Step 4: Simplify right side
    18,515.91x = 328,195,409.14
  5. Step 5: Solve for x
    x = 328,195,409.14/18,515.91
  6. Step 6: Final answer
    x = 17,725.05

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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.