Home / 12,122.64-16,728.06-6,817.05

Finding the Fourth Proportional to 12,122.64, 16,728.06 and 6,817.05

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Solution

The fourth proportional to 12,122.64, 16,728.06 and 6,817.05 is: 9,406.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,122.64 : 16,728.06 = 6,817.05 : x
  2. Step 2: Convert to fraction form
    12,122.64/16,728.06 = 6,817.05/x
  3. Step 3: Cross multiply
    12,122.64x = 16,728.06 × 6,817.05
  4. Step 4: Simplify right side
    12,122.64x = 114,036,021.42
  5. Step 5: Solve for x
    x = 114,036,021.42/12,122.64
  6. Step 6: Final answer
    x = 9,406.86

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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.