Home / 12,222.25-18,333.38-4,431.07

Finding the Fourth Proportional to 12,222.25, 18,333.38 and 4,431.07

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Solution

The fourth proportional to 12,222.25, 18,333.38 and 4,431.07 is: 6,646.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,222.25 : 18,333.38 = 4,431.07 : x
  2. Step 2: Convert to fraction form
    12,222.25/18,333.38 = 4,431.07/x
  3. Step 3: Cross multiply
    12,222.25x = 18,333.38 × 4,431.07
  4. Step 4: Simplify right side
    12,222.25x = 81,236,490.12
  5. Step 5: Solve for x
    x = 81,236,490.12/12,222.25
  6. Step 6: Final answer
    x = 6,646.61

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Half scale
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Double scale
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Similar ratio
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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.