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Finding the Fourth Proportional to 18,273.12, 27,401.04 and 8,409.48

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Solution

The fourth proportional to 18,273.12, 27,401.04 and 8,409.48 is: 12,610.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,273.12 : 27,401.04 = 8,409.48 : x
  2. Step 2: Convert to fraction form
    18,273.12/27,401.04 = 8,409.48/x
  3. Step 3: Cross multiply
    18,273.12x = 27,401.04 × 8,409.48
  4. Step 4: Simplify right side
    18,273.12x = 230,428,497.86
  5. Step 5: Solve for x
    x = 230,428,497.86/18,273.12
  6. Step 6: Final answer
    x = 12,610.24

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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.