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Finding the Fourth Proportional to 18,356.22, 27,530.67 and 8,992.20

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Solution

The fourth proportional to 18,356.22, 27,530.67 and 8,992.20 is: 13,486.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,356.22 : 27,530.67 = 8,992.20 : x
  2. Step 2: Convert to fraction form
    18,356.22/27,530.67 = 8,992.20/x
  3. Step 3: Cross multiply
    18,356.22x = 27,530.67 × 8,992.20
  4. Step 4: Simplify right side
    18,356.22x = 247,561,290.77
  5. Step 5: Solve for x
    x = 247,561,290.77/18,356.22
  6. Step 6: Final answer
    x = 13,486.51

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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.