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Finding the Fourth Proportional to 18,665.56, 27,998.88 and 6,976.54

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Solution

The fourth proportional to 18,665.56, 27,998.88 and 6,976.54 is: 10,465.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,665.56 : 27,998.88 = 6,976.54 : x
  2. Step 2: Convert to fraction form
    18,665.56/27,998.88 = 6,976.54/x
  3. Step 3: Cross multiply
    18,665.56x = 27,998.88 × 6,976.54
  4. Step 4: Simplify right side
    18,665.56x = 195,335,306.28
  5. Step 5: Solve for x
    x = 195,335,306.28/18,665.56
  6. Step 6: Final answer
    x = 10,465.01

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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.