Home / 28,198.20-42,290.82-8,476.32

Finding the Fourth Proportional to 28,198.20, 42,290.82 and 8,476.32

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Solution

The fourth proportional to 28,198.20, 42,290.82 and 8,476.32 is: 12,712.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,198.20 : 42,290.82 = 8,476.32 : x
  2. Step 2: Convert to fraction form
    28,198.20/42,290.82 = 8,476.32/x
  3. Step 3: Cross multiply
    28,198.20x = 42,290.82 × 8,476.32
  4. Step 4: Simplify right side
    28,198.20x = 358,470,523.38
  5. Step 5: Solve for x
    x = 358,470,523.38/28,198.20
  6. Step 6: Final answer
    x = 12,712.53

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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.