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Finding the Fourth Proportional to 12,605.30, 18,882.90 and 11,571.95

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Solution

The fourth proportional to 12,605.30, 18,882.90 and 11,571.95 is: 17,334.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,605.30 : 18,882.90 = 11,571.95 : x
  2. Step 2: Convert to fraction form
    12,605.30/18,882.90 = 11,571.95/x
  3. Step 3: Cross multiply
    12,605.30x = 18,882.90 × 11,571.95
  4. Step 4: Simplify right side
    12,605.30x = 218,511,883.10
  5. Step 5: Solve for x
    x = 218,511,883.10/12,605.30
  6. Step 6: Final answer
    x = 17,334.92

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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.