Home / 12,771.94-17,623.90-7,105.79

Finding the Fourth Proportional to 12,771.94, 17,623.90 and 7,105.79

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Solution

The fourth proportional to 12,771.94, 17,623.90 and 7,105.79 is: 9,805.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,771.94 : 17,623.90 = 7,105.79 : x
  2. Step 2: Convert to fraction form
    12,771.94/17,623.90 = 7,105.79/x
  3. Step 3: Cross multiply
    12,771.94x = 17,623.90 × 7,105.79
  4. Step 4: Simplify right side
    12,771.94x = 125,231,732.38
  5. Step 5: Solve for x
    x = 125,231,732.38/12,771.94
  6. Step 6: Final answer
    x = 9,805.22

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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.