Home / 12,429.76-18,644.64-3,196.48

Finding the Fourth Proportional to 12,429.76, 18,644.64 and 3,196.48

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Solution

The fourth proportional to 12,429.76, 18,644.64 and 3,196.48 is: 4,794.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,429.76 : 18,644.64 = 3,196.48 : x
  2. Step 2: Convert to fraction form
    12,429.76/18,644.64 = 3,196.48/x
  3. Step 3: Cross multiply
    12,429.76x = 18,644.64 × 3,196.48
  4. Step 4: Simplify right side
    12,429.76x = 59,597,218.87
  5. Step 5: Solve for x
    x = 59,597,218.87/12,429.76
  6. Step 6: Final answer
    x = 4,794.72

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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.