Home / 11,680.12-16,118.05-6,644.76

Finding the Fourth Proportional to 11,680.12, 16,118.05 and 6,644.76

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Solution

The fourth proportional to 11,680.12, 16,118.05 and 6,644.76 is: 9,169.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,680.12 : 16,118.05 = 6,644.76 : x
  2. Step 2: Convert to fraction form
    11,680.12/16,118.05 = 6,644.76/x
  3. Step 3: Cross multiply
    11,680.12x = 16,118.05 × 6,644.76
  4. Step 4: Simplify right side
    11,680.12x = 107,100,573.92
  5. Step 5: Solve for x
    x = 107,100,573.92/11,680.12
  6. Step 6: Final answer
    x = 9,169.48

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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.