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Finding the Fourth Proportional to 18,156.96, 27,221.94 and 7,630.07

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Solution

The fourth proportional to 18,156.96, 27,221.94 and 7,630.07 is: 11,439.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,156.96 : 27,221.94 = 7,630.07 : x
  2. Step 2: Convert to fraction form
    18,156.96/27,221.94 = 7,630.07/x
  3. Step 3: Cross multiply
    18,156.96x = 27,221.94 × 7,630.07
  4. Step 4: Simplify right side
    18,156.96x = 207,705,171.63
  5. Step 5: Solve for x
    x = 207,705,171.63/18,156.96
  6. Step 6: Final answer
    x = 11,439.42

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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.