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Finding the Fourth Proportional to 18,640.56, 27,874.44 and 14,432.88

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Solution

The fourth proportional to 18,640.56, 27,874.44 and 14,432.88 is: 21,582.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,640.56 : 27,874.44 = 14,432.88 : x
  2. Step 2: Convert to fraction form
    18,640.56/27,874.44 = 14,432.88/x
  3. Step 3: Cross multiply
    18,640.56x = 27,874.44 × 14,432.88
  4. Step 4: Simplify right side
    18,640.56x = 402,308,447.59
  5. Step 5: Solve for x
    x = 402,308,447.59/18,640.56
  6. Step 6: Final answer
    x = 21,582.42

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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.