Home / 28,520.94-42,778.98-8,799.66

Finding the Fourth Proportional to 28,520.94, 42,778.98 and 8,799.66

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Solution

The fourth proportional to 28,520.94, 42,778.98 and 8,799.66 is: 13,198.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,520.94 : 42,778.98 = 8,799.66 : x
  2. Step 2: Convert to fraction form
    28,520.94/42,778.98 = 8,799.66/x
  3. Step 3: Cross multiply
    28,520.94x = 42,778.98 × 8,799.66
  4. Step 4: Simplify right side
    28,520.94x = 376,440,479.15
  5. Step 5: Solve for x
    x = 376,440,479.15/28,520.94
  6. Step 6: Final answer
    x = 13,198.74

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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.