Home / 12,771.28-17,623.92-7,105.84

Finding the Fourth Proportional to 12,771.28, 17,623.92 and 7,105.84

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Solution

The fourth proportional to 12,771.28, 17,623.92 and 7,105.84 is: 9,805.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,771.28 : 17,623.92 = 7,105.84 : x
  2. Step 2: Convert to fraction form
    12,771.28/17,623.92 = 7,105.84/x
  3. Step 3: Cross multiply
    12,771.28x = 17,623.92 × 7,105.84
  4. Step 4: Simplify right side
    12,771.28x = 125,232,755.69
  5. Step 5: Solve for x
    x = 125,232,755.69/12,771.28
  6. Step 6: Final answer
    x = 9,805.81

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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.