Home / 12,217.20-16,858.84-6,912.56

Finding the Fourth Proportional to 12,217.20, 16,858.84 and 6,912.56

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Solution

The fourth proportional to 12,217.20, 16,858.84 and 6,912.56 is: 9,538.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,217.20 : 16,858.84 = 6,912.56 : x
  2. Step 2: Convert to fraction form
    12,217.20/16,858.84 = 6,912.56/x
  3. Step 3: Cross multiply
    12,217.20x = 16,858.84 × 6,912.56
  4. Step 4: Simplify right side
    12,217.20x = 116,537,743.03
  5. Step 5: Solve for x
    x = 116,537,743.03/12,217.20
  6. Step 6: Final answer
    x = 9,538.83

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.