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Finding the Fourth Proportional to 18,622.86, 27,930.48 and 5,471.70

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Solution

The fourth proportional to 18,622.86, 27,930.48 and 5,471.70 is: 8,206.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,622.86 : 27,930.48 = 5,471.70 : x
  2. Step 2: Convert to fraction form
    18,622.86/27,930.48 = 5,471.70/x
  3. Step 3: Cross multiply
    18,622.86x = 27,930.48 × 5,471.70
  4. Step 4: Simplify right side
    18,622.86x = 152,827,207.42
  5. Step 5: Solve for x
    x = 152,827,207.42/18,622.86
  6. Step 6: Final answer
    x = 8,206.43

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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.