Home / 12,656.93-18,981.74-3,771.90

Finding the Fourth Proportional to 12,656.93, 18,981.74 and 3,771.90

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Solution

The fourth proportional to 12,656.93, 18,981.74 and 3,771.90 is: 5,656.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,656.93 : 18,981.74 = 3,771.90 : x
  2. Step 2: Convert to fraction form
    12,656.93/18,981.74 = 3,771.90/x
  3. Step 3: Cross multiply
    12,656.93x = 18,981.74 × 3,771.90
  4. Step 4: Simplify right side
    12,656.93x = 71,597,234.54
  5. Step 5: Solve for x
    x = 71,597,234.54/12,656.93
  6. Step 6: Final answer
    x = 5,656.76

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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.