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Finding the Fourth Proportional to 18,321.92, 27,483.97 and 7,077.34

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Solution

The fourth proportional to 18,321.92, 27,483.97 and 7,077.34 is: 10,616.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,321.92 : 27,483.97 = 7,077.34 : x
  2. Step 2: Convert to fraction form
    18,321.92/27,483.97 = 7,077.34/x
  3. Step 3: Cross multiply
    18,321.92x = 27,483.97 × 7,077.34
  4. Step 4: Simplify right side
    18,321.92x = 194,513,364.85
  5. Step 5: Solve for x
    x = 194,513,364.85/18,321.92
  6. Step 6: Final answer
    x = 10,616.43

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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.