Home / 12,872.26-19,308.58-5,081

Finding the Fourth Proportional to 12,872.26, 19,308.58 and 5,081

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Solution

The fourth proportional to 12,872.26, 19,308.58 and 5,081 is: 7,621.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,872.26 : 19,308.58 = 5,081 : x
  2. Step 2: Convert to fraction form
    12,872.26/19,308.58 = 5,081/x
  3. Step 3: Cross multiply
    12,872.26x = 19,308.58 × 5,081
  4. Step 4: Simplify right side
    12,872.26x = 98,106,894.98
  5. Step 5: Solve for x
    x = 98,106,894.98/12,872.26
  6. Step 6: Final answer
    x = 7,621.57

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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.