Home / 12,876.75-19,318.37-3,642.75

Finding the Fourth Proportional to 12,876.75, 19,318.37 and 3,642.75

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Solution

The fourth proportional to 12,876.75, 19,318.37 and 3,642.75 is: 5,465.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,876.75 : 19,318.37 = 3,642.75 : x
  2. Step 2: Convert to fraction form
    12,876.75/19,318.37 = 3,642.75/x
  3. Step 3: Cross multiply
    12,876.75x = 19,318.37 × 3,642.75
  4. Step 4: Simplify right side
    12,876.75x = 70,371,974.10
  5. Step 5: Solve for x
    x = 70,371,974.10/12,876.75
  6. Step 6: Final answer
    x = 5,465.04

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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.