Home / 12,940.07-19,414.21-4,619.90

Finding the Fourth Proportional to 12,940.07, 19,414.21 and 4,619.90

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Solution

The fourth proportional to 12,940.07, 19,414.21 and 4,619.90 is: 6,931.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,940.07 : 19,414.21 = 4,619.90 : x
  2. Step 2: Convert to fraction form
    12,940.07/19,414.21 = 4,619.90/x
  3. Step 3: Cross multiply
    12,940.07x = 19,414.21 × 4,619.90
  4. Step 4: Simplify right side
    12,940.07x = 89,691,741.43
  5. Step 5: Solve for x
    x = 89,691,741.43/12,940.07
  6. Step 6: Final answer
    x = 6,931.32

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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.