Home / 11,921.21-16,446.12-7,202.75

Finding the Fourth Proportional to 11,921.21, 16,446.12 and 7,202.75

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Solution

The fourth proportional to 11,921.21, 16,446.12 and 7,202.75 is: 9,936.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,921.21 : 16,446.12 = 7,202.75 : x
  2. Step 2: Convert to fraction form
    11,921.21/16,446.12 = 7,202.75/x
  3. Step 3: Cross multiply
    11,921.21x = 16,446.12 × 7,202.75
  4. Step 4: Simplify right side
    11,921.21x = 118,457,290.83
  5. Step 5: Solve for x
    x = 118,457,290.83/11,921.21
  6. Step 6: Final answer
    x = 9,936.69

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Half scale
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Double scale
Find fourth proportional to 11,922.21, 16,447.50 and 7,203.75
Similar ratio
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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.