Home / 12,939.28-19,382.04-8,236.02

Finding the Fourth Proportional to 12,939.28, 19,382.04 and 8,236.02

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Solution

The fourth proportional to 12,939.28, 19,382.04 and 8,236.02 is: 12,336.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,939.28 : 19,382.04 = 8,236.02 : x
  2. Step 2: Convert to fraction form
    12,939.28/19,382.04 = 8,236.02/x
  3. Step 3: Cross multiply
    12,939.28x = 19,382.04 × 8,236.02
  4. Step 4: Simplify right side
    12,939.28x = 159,630,869.08
  5. Step 5: Solve for x
    x = 159,630,869.08/12,939.28
  6. Step 6: Final answer
    x = 12,336.92

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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.