Home / 12,391.77-17,094.36-7,910.85

Finding the Fourth Proportional to 12,391.77, 17,094.36 and 7,910.85

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Solution

The fourth proportional to 12,391.77, 17,094.36 and 7,910.85 is: 10,912.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,391.77 : 17,094.36 = 7,910.85 : x
  2. Step 2: Convert to fraction form
    12,391.77/17,094.36 = 7,910.85/x
  3. Step 3: Cross multiply
    12,391.77x = 17,094.36 × 7,910.85
  4. Step 4: Simplify right side
    12,391.77x = 135,230,917.81
  5. Step 5: Solve for x
    x = 135,230,917.81/12,391.77
  6. Step 6: Final answer
    x = 10,912.96

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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.