Home / 12,704.64-19,056.96-3,939.36

Finding the Fourth Proportional to 12,704.64, 19,056.96 and 3,939.36

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Solution

The fourth proportional to 12,704.64, 19,056.96 and 3,939.36 is: 5,909.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,704.64 : 19,056.96 = 3,939.36 : x
  2. Step 2: Convert to fraction form
    12,704.64/19,056.96 = 3,939.36/x
  3. Step 3: Cross multiply
    12,704.64x = 19,056.96 × 3,939.36
  4. Step 4: Simplify right side
    12,704.64x = 75,072,225.95
  5. Step 5: Solve for x
    x = 75,072,225.95/12,704.64
  6. Step 6: Final answer
    x = 5,909.04

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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.