Home / 19,205.45-28,790.44-12,164.18

Finding the Fourth Proportional to 19,205.45, 28,790.44 and 12,164.18

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Solution

The fourth proportional to 19,205.45, 28,790.44 and 12,164.18 is: 18,235.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,205.45 : 28,790.44 = 12,164.18 : x
  2. Step 2: Convert to fraction form
    19,205.45/28,790.44 = 12,164.18/x
  3. Step 3: Cross multiply
    19,205.45x = 28,790.44 × 12,164.18
  4. Step 4: Simplify right side
    19,205.45x = 350,211,920.08
  5. Step 5: Solve for x
    x = 350,211,920.08/19,205.45
  6. Step 6: Final answer
    x = 18,235.02

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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.