Home / 11,647.85-17,462.66-7,940.88

Finding the Fourth Proportional to 11,647.85, 17,462.66 and 7,940.88

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Solution

The fourth proportional to 11,647.85, 17,462.66 and 7,940.88 is: 11,905.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,647.85 : 17,462.66 = 7,940.88 : x
  2. Step 2: Convert to fraction form
    11,647.85/17,462.66 = 7,940.88/x
  3. Step 3: Cross multiply
    11,647.85x = 17,462.66 × 7,940.88
  4. Step 4: Simplify right side
    11,647.85x = 138,668,847.84
  5. Step 5: Solve for x
    x = 138,668,847.84/11,647.85
  6. Step 6: Final answer
    x = 11,905.11

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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.