Home / 11,688.38-16,129.74-6,383.24

Finding the Fourth Proportional to 11,688.38, 16,129.74 and 6,383.24

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Solution

The fourth proportional to 11,688.38, 16,129.74 and 6,383.24 is: 8,808.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,688.38 : 16,129.74 = 6,383.24 : x
  2. Step 2: Convert to fraction form
    11,688.38/16,129.74 = 6,383.24/x
  3. Step 3: Cross multiply
    11,688.38x = 16,129.74 × 6,383.24
  4. Step 4: Simplify right side
    11,688.38x = 102,960,001.56
  5. Step 5: Solve for x
    x = 102,960,001.56/11,688.38
  6. Step 6: Final answer
    x = 8,808.75

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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.