Home / 11,912.42-17,856.13-4,012.20

Finding the Fourth Proportional to 11,912.42, 17,856.13 and 4,012.20

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Solution

The fourth proportional to 11,912.42, 17,856.13 and 4,012.20 is: 6,014.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,912.42 : 17,856.13 = 4,012.20 : x
  2. Step 2: Convert to fraction form
    11,912.42/17,856.13 = 4,012.20/x
  3. Step 3: Cross multiply
    11,912.42x = 17,856.13 × 4,012.20
  4. Step 4: Simplify right side
    11,912.42x = 71,642,364.79
  5. Step 5: Solve for x
    x = 71,642,364.79/11,912.42
  6. Step 6: Final answer
    x = 6,014.09

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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.