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Finding the Fourth Proportional to 12,304.92, 18,363.21 and 10,991.64

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Solution

The fourth proportional to 12,304.92, 18,363.21 and 10,991.64 is: 16,403.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,304.92 : 18,363.21 = 10,991.64 : x
  2. Step 2: Convert to fraction form
    12,304.92/18,363.21 = 10,991.64/x
  3. Step 3: Cross multiply
    12,304.92x = 18,363.21 × 10,991.64
  4. Step 4: Simplify right side
    12,304.92x = 201,841,793.56
  5. Step 5: Solve for x
    x = 201,841,793.56/12,304.92
  6. Step 6: Final answer
    x = 16,403.34

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.