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Finding the Fourth Proportional to 18,221.44, 27,314.73 and 7,124.44

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Solution

The fourth proportional to 18,221.44, 27,314.73 and 7,124.44 is: 10,679.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,221.44 : 27,314.73 = 7,124.44 : x
  2. Step 2: Convert to fraction form
    18,221.44/27,314.73 = 7,124.44/x
  3. Step 3: Cross multiply
    18,221.44x = 27,314.73 × 7,124.44
  4. Step 4: Simplify right side
    18,221.44x = 194,602,155.00
  5. Step 5: Solve for x
    x = 194,602,155.00/18,221.44
  6. Step 6: Final answer
    x = 10,679.85

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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.