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Finding the Fourth Proportional to 19,321.92, 26,647.92 and 13,344.12

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Solution

The fourth proportional to 19,321.92, 26,647.92 and 13,344.12 is: 18,403.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,321.92 : 26,647.92 = 13,344.12 : x
  2. Step 2: Convert to fraction form
    19,321.92/26,647.92 = 13,344.12/x
  3. Step 3: Cross multiply
    19,321.92x = 26,647.92 × 13,344.12
  4. Step 4: Simplify right side
    19,321.92x = 355,593,042.23
  5. Step 5: Solve for x
    x = 355,593,042.23/19,321.92
  6. Step 6: Final answer
    x = 18,403.61

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.