Home / 11,979.38-16,523.12-10,383.21

Finding the Fourth Proportional to 11,979.38, 16,523.12 and 10,383.21

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Solution

The fourth proportional to 11,979.38, 16,523.12 and 10,383.21 is: 14,321.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,979.38 : 16,523.12 = 10,383.21 : x
  2. Step 2: Convert to fraction form
    11,979.38/16,523.12 = 10,383.21/x
  3. Step 3: Cross multiply
    11,979.38x = 16,523.12 × 10,383.21
  4. Step 4: Simplify right side
    11,979.38x = 171,563,050.77
  5. Step 5: Solve for x
    x = 171,563,050.77/11,979.38
  6. Step 6: Final answer
    x = 14,321.53

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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 (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.