Home / 11,729.96-16,186.74-6,423.75

Finding the Fourth Proportional to 11,729.96, 16,186.74 and 6,423.75

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Solution

The fourth proportional to 11,729.96, 16,186.74 and 6,423.75 is: 8,864.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,729.96 : 16,186.74 = 6,423.75 : x
  2. Step 2: Convert to fraction form
    11,729.96/16,186.74 = 6,423.75/x
  3. Step 3: Cross multiply
    11,729.96x = 16,186.74 × 6,423.75
  4. Step 4: Simplify right side
    11,729.96x = 103,979,571.08
  5. Step 5: Solve for x
    x = 103,979,571.08/11,729.96
  6. Step 6: Final answer
    x = 8,864.45

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