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Finding the Fourth Proportional to 18,219.22, 27,342.15 and 11,661.46

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Solution

The fourth proportional to 18,219.22, 27,342.15 and 11,661.46 is: 17,500.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,219.22 : 27,342.15 = 11,661.46 : x
  2. Step 2: Convert to fraction form
    18,219.22/27,342.15 = 11,661.46/x
  3. Step 3: Cross multiply
    18,219.22x = 27,342.15 × 11,661.46
  4. Step 4: Simplify right side
    18,219.22x = 318,849,388.54
  5. Step 5: Solve for x
    x = 318,849,388.54/18,219.22
  6. Step 6: Final answer
    x = 17,500.72

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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.