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Finding the Fourth Proportional to 18,843.96, 28,227.06 and 14,679.48

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Solution

The fourth proportional to 18,843.96, 28,227.06 and 14,679.48 is: 21,988.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,843.96 : 28,227.06 = 14,679.48 : x
  2. Step 2: Convert to fraction form
    18,843.96/28,227.06 = 14,679.48/x
  3. Step 3: Cross multiply
    18,843.96x = 28,227.06 × 14,679.48
  4. Step 4: Simplify right side
    18,843.96x = 414,358,562.73
  5. Step 5: Solve for x
    x = 414,358,562.73/18,843.96
  6. Step 6: Final answer
    x = 21,988.93

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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.