Home / 12,218.25-16,861.56-6,912.96

Finding the Fourth Proportional to 12,218.25, 16,861.56 and 6,912.96

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Solution

The fourth proportional to 12,218.25, 16,861.56 and 6,912.96 is: 9,540.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,218.25 : 16,861.56 = 6,912.96 : x
  2. Step 2: Convert to fraction form
    12,218.25/16,861.56 = 6,912.96/x
  3. Step 3: Cross multiply
    12,218.25x = 16,861.56 × 6,912.96
  4. Step 4: Simplify right side
    12,218.25x = 116,563,289.82
  5. Step 5: Solve for x
    x = 116,563,289.82/12,218.25
  6. Step 6: Final answer
    x = 9,540.10

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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.