Home / 12,520.55-18,778.34-4,623.05

Finding the Fourth Proportional to 12,520.55, 18,778.34 and 4,623.05

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Solution

The fourth proportional to 12,520.55, 18,778.34 and 4,623.05 is: 6,933.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,520.55 : 18,778.34 = 4,623.05 : x
  2. Step 2: Convert to fraction form
    12,520.55/18,778.34 = 4,623.05/x
  3. Step 3: Cross multiply
    12,520.55x = 18,778.34 × 4,623.05
  4. Step 4: Simplify right side
    12,520.55x = 86,813,087.73
  5. Step 5: Solve for x
    x = 86,813,087.73/12,520.55
  6. Step 6: Final answer
    x = 6,933.65

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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.