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Finding the Fourth Proportional to 18,605.10, 27,907.20 and 11,203.95

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Solution

The fourth proportional to 18,605.10, 27,907.20 and 11,203.95 is: 16,805.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,605.10 : 27,907.20 = 11,203.95 : x
  2. Step 2: Convert to fraction form
    18,605.10/27,907.20 = 11,203.95/x
  3. Step 3: Cross multiply
    18,605.10x = 27,907.20 × 11,203.95
  4. Step 4: Simplify right side
    18,605.10x = 312,670,873.44
  5. Step 5: Solve for x
    x = 312,670,873.44/18,605.10
  6. Step 6: Final answer
    x = 16,805.65

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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.