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Finding the Fourth Proportional to 18,747.27, 28,107.02 and 11,349.98

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Solution

The fourth proportional to 18,747.27, 28,107.02 and 11,349.98 is: 17,016.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,747.27 : 28,107.02 = 11,349.98 : x
  2. Step 2: Convert to fraction form
    18,747.27/28,107.02 = 11,349.98/x
  3. Step 3: Cross multiply
    18,747.27x = 28,107.02 × 11,349.98
  4. Step 4: Simplify right side
    18,747.27x = 319,013,917.57
  5. Step 5: Solve for x
    x = 319,013,917.57/18,747.27
  6. Step 6: Final answer
    x = 17,016.55

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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.