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Finding the Fourth Proportional to 18,620.19, 27,934.20 and 5,471.46

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Solution

The fourth proportional to 18,620.19, 27,934.20 and 5,471.46 is: 8,208.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,620.19 : 27,934.20 = 5,471.46 : x
  2. Step 2: Convert to fraction form
    18,620.19/27,934.20 = 5,471.46/x
  3. Step 3: Cross multiply
    18,620.19x = 27,934.20 × 5,471.46
  4. Step 4: Simplify right side
    18,620.19x = 152,840,857.93
  5. Step 5: Solve for x
    x = 152,840,857.93/18,620.19
  6. Step 6: Final answer
    x = 8,208.34

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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.