Home / 13,078.44-19,612.80-4,311

Finding the Fourth Proportional to 13,078.44, 19,612.80 and 4,311

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Solution

The fourth proportional to 13,078.44, 19,612.80 and 4,311 is: 6,464.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,078.44 : 19,612.80 = 4,311 : x
  2. Step 2: Convert to fraction form
    13,078.44/19,612.80 = 4,311/x
  3. Step 3: Cross multiply
    13,078.44x = 19,612.80 × 4,311
  4. Step 4: Simplify right side
    13,078.44x = 84,550,780.80
  5. Step 5: Solve for x
    x = 84,550,780.80/13,078.44
  6. Step 6: Final answer
    x = 6,464.90

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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.