Home / 11,121.36-15,350.76-6,408.96

Finding the Fourth Proportional to 11,121.36, 15,350.76 and 6,408.96

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Solution

The fourth proportional to 11,121.36, 15,350.76 and 6,408.96 is: 8,846.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,121.36 : 15,350.76 = 6,408.96 : x
  2. Step 2: Convert to fraction form
    11,121.36/15,350.76 = 6,408.96/x
  3. Step 3: Cross multiply
    11,121.36x = 15,350.76 × 6,408.96
  4. Step 4: Simplify right side
    11,121.36x = 98,382,406.81
  5. Step 5: Solve for x
    x = 98,382,406.81/11,121.36
  6. Step 6: Final answer
    x = 8,846.26

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Half scale
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Double scale
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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.