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Finding the Fourth Proportional to 12,919.59, 19,391.49 and 6,350.49

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Solution

The fourth proportional to 12,919.59, 19,391.49 and 6,350.49 is: 9,531.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,919.59 : 19,391.49 = 6,350.49 : x
  2. Step 2: Convert to fraction form
    12,919.59/19,391.49 = 6,350.49/x
  3. Step 3: Cross multiply
    12,919.59x = 19,391.49 × 6,350.49
  4. Step 4: Simplify right side
    12,919.59x = 123,145,463.33
  5. Step 5: Solve for x
    x = 123,145,463.33/12,919.59
  6. Step 6: Final answer
    x = 9,531.69

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1.5x scale

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.