Home / 11,391.07-15,721.11-6,914.56

Finding the Fourth Proportional to 11,391.07, 15,721.11 and 6,914.56

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Solution

The fourth proportional to 11,391.07, 15,721.11 and 6,914.56 is: 9,542.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,391.07 : 15,721.11 = 6,914.56 : x
  2. Step 2: Convert to fraction form
    11,391.07/15,721.11 = 6,914.56/x
  3. Step 3: Cross multiply
    11,391.07x = 15,721.11 × 6,914.56
  4. Step 4: Simplify right side
    11,391.07x = 108,704,558.36
  5. Step 5: Solve for x
    x = 108,704,558.36/11,391.07
  6. Step 6: Final answer
    x = 9,542.96

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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.