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Finding the Fourth Proportional to 18,502.02, 27,770.04 and 13,311.54

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Solution

The fourth proportional to 18,502.02, 27,770.04 and 13,311.54 is: 19,979.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,502.02 : 27,770.04 = 13,311.54 : x
  2. Step 2: Convert to fraction form
    18,502.02/27,770.04 = 13,311.54/x
  3. Step 3: Cross multiply
    18,502.02x = 27,770.04 × 13,311.54
  4. Step 4: Simplify right side
    18,502.02x = 369,661,998.26
  5. Step 5: Solve for x
    x = 369,661,998.26/18,502.02
  6. Step 6: Final answer
    x = 19,979.55

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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.