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Finding the Fourth Proportional to 18,160.86, 27,224.85 and 12,616.80

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Solution

The fourth proportional to 18,160.86, 27,224.85 and 12,616.80 is: 18,913.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,160.86 : 27,224.85 = 12,616.80 : x
  2. Step 2: Convert to fraction form
    18,160.86/27,224.85 = 12,616.80/x
  3. Step 3: Cross multiply
    18,160.86x = 27,224.85 × 12,616.80
  4. Step 4: Simplify right side
    18,160.86x = 343,490,487.48
  5. Step 5: Solve for x
    x = 343,490,487.48/18,160.86
  6. Step 6: Final answer
    x = 18,913.78

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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.