Home / 11,391.12-17,091.54-4,818.78

Finding the Fourth Proportional to 11,391.12, 17,091.54 and 4,818.78

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Solution

The fourth proportional to 11,391.12, 17,091.54 and 4,818.78 is: 7,230.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,391.12 : 17,091.54 = 4,818.78 : x
  2. Step 2: Convert to fraction form
    11,391.12/17,091.54 = 4,818.78/x
  3. Step 3: Cross multiply
    11,391.12x = 17,091.54 × 4,818.78
  4. Step 4: Simplify right side
    11,391.12x = 82,360,371.12
  5. Step 5: Solve for x
    x = 82,360,371.12/11,391.12
  6. Step 6: Final answer
    x = 7,230.23

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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.