Home / 12,179.32-18,271.20-3,861.43

Finding the Fourth Proportional to 12,179.32, 18,271.20 and 3,861.43

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Solution

The fourth proportional to 12,179.32, 18,271.20 and 3,861.43 is: 5,792.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,179.32 : 18,271.20 = 3,861.43 : x
  2. Step 2: Convert to fraction form
    12,179.32/18,271.20 = 3,861.43/x
  3. Step 3: Cross multiply
    12,179.32x = 18,271.20 × 3,861.43
  4. Step 4: Simplify right side
    12,179.32x = 70,552,959.82
  5. Step 5: Solve for x
    x = 70,552,959.82/12,179.32
  6. Step 6: Final answer
    x = 5,792.85

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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.