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Finding the Fourth Proportional to 18,276.60, 27,414.90 and 7,179.60

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Solution

The fourth proportional to 18,276.60, 27,414.90 and 7,179.60 is: 10,769.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,276.60 : 27,414.90 = 7,179.60 : x
  2. Step 2: Convert to fraction form
    18,276.60/27,414.90 = 7,179.60/x
  3. Step 3: Cross multiply
    18,276.60x = 27,414.90 × 7,179.60
  4. Step 4: Simplify right side
    18,276.60x = 196,828,016.04
  5. Step 5: Solve for x
    x = 196,828,016.04/18,276.60
  6. Step 6: Final answer
    x = 10,769.40

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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.