Home / 11,408.16-15,721.92-8,216.04

Finding the Fourth Proportional to 11,408.16, 15,721.92 and 8,216.04

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Solution

The fourth proportional to 11,408.16, 15,721.92 and 8,216.04 is: 11,322.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,408.16 : 15,721.92 = 8,216.04 : x
  2. Step 2: Convert to fraction form
    11,408.16/15,721.92 = 8,216.04/x
  3. Step 3: Cross multiply
    11,408.16x = 15,721.92 × 8,216.04
  4. Step 4: Simplify right side
    11,408.16x = 129,171,923.60
  5. Step 5: Solve for x
    x = 129,171,923.60/11,408.16
  6. Step 6: Final answer
    x = 11,322.77

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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.