Home / 12,231.08-18,338.70-8,323.40

Finding the Fourth Proportional to 12,231.08, 18,338.70 and 8,323.40

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Solution

The fourth proportional to 12,231.08, 18,338.70 and 8,323.40 is: 12,479.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,231.08 : 18,338.70 = 8,323.40 : x
  2. Step 2: Convert to fraction form
    12,231.08/18,338.70 = 8,323.40/x
  3. Step 3: Cross multiply
    12,231.08x = 18,338.70 × 8,323.40
  4. Step 4: Simplify right side
    12,231.08x = 152,640,335.58
  5. Step 5: Solve for x
    x = 152,640,335.58/12,231.08
  6. Step 6: Final answer
    x = 12,479.71

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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.