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Finding the Fourth Proportional to 18,036.80, 27,056.01 and 6,939.54

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Solution

The fourth proportional to 18,036.80, 27,056.01 and 6,939.54 is: 10,409.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,036.80 : 27,056.01 = 6,939.54 : x
  2. Step 2: Convert to fraction form
    18,036.80/27,056.01 = 6,939.54/x
  3. Step 3: Cross multiply
    18,036.80x = 27,056.01 × 6,939.54
  4. Step 4: Simplify right side
    18,036.80x = 187,756,263.64
  5. Step 5: Solve for x
    x = 187,756,263.64/18,036.80
  6. Step 6: Final answer
    x = 10,409.62

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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.