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Finding the Fourth Proportional to 18,660.80, 27,992.01 and 6,967.64

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Solution

The fourth proportional to 18,660.80, 27,992.01 and 6,967.64 is: 10,451.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,660.80 : 27,992.01 = 6,967.64 : x
  2. Step 2: Convert to fraction form
    18,660.80/27,992.01 = 6,967.64/x
  3. Step 3: Cross multiply
    18,660.80x = 27,992.01 × 6,967.64
  4. Step 4: Simplify right side
    18,660.80x = 195,038,248.56
  5. Step 5: Solve for x
    x = 195,038,248.56/18,660.80
  6. Step 6: Final answer
    x = 10,451.76

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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.