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Finding the Fourth Proportional to 18,091.80, 27,137.70 and 14,981.40

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Solution

The fourth proportional to 18,091.80, 27,137.70 and 14,981.40 is: 22,472.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,091.80 : 27,137.70 = 14,981.40 : x
  2. Step 2: Convert to fraction form
    18,091.80/27,137.70 = 14,981.40/x
  3. Step 3: Cross multiply
    18,091.80x = 27,137.70 × 14,981.40
  4. Step 4: Simplify right side
    18,091.80x = 406,560,738.78
  5. Step 5: Solve for x
    x = 406,560,738.78/18,091.80
  6. Step 6: Final answer
    x = 22,472.10

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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.