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Finding the Fourth Proportional to 18,610.80, 27,921.06 and 6,924.12

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Solution

The fourth proportional to 18,610.80, 27,921.06 and 6,924.12 is: 10,387.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,610.80 : 27,921.06 = 6,924.12 : x
  2. Step 2: Convert to fraction form
    18,610.80/27,921.06 = 6,924.12/x
  3. Step 3: Cross multiply
    18,610.80x = 27,921.06 × 6,924.12
  4. Step 4: Simplify right side
    18,610.80x = 193,328,769.97
  5. Step 5: Solve for x
    x = 193,328,769.97/18,610.80
  6. Step 6: Final answer
    x = 10,387.99

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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.