Home / 12,179.76-18,271.95-3,861.87

Finding the Fourth Proportional to 12,179.76, 18,271.95 and 3,861.87

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Solution

The fourth proportional to 12,179.76, 18,271.95 and 3,861.87 is: 5,793.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,179.76 : 18,271.95 = 3,861.87 : x
  2. Step 2: Convert to fraction form
    12,179.76/18,271.95 = 3,861.87/x
  3. Step 3: Cross multiply
    12,179.76x = 18,271.95 × 3,861.87
  4. Step 4: Simplify right side
    12,179.76x = 70,563,876.24
  5. Step 5: Solve for x
    x = 70,563,876.24/12,179.76
  6. Step 6: Final answer
    x = 5,793.54

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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.