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Finding the Fourth Proportional to 18,509.31, 27,716.88 and 12,250.54

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Solution

The fourth proportional to 18,509.31, 27,716.88 and 12,250.54 is: 18,344.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,509.31 : 27,716.88 = 12,250.54 : x
  2. Step 2: Convert to fraction form
    18,509.31/27,716.88 = 12,250.54/x
  3. Step 3: Cross multiply
    18,509.31x = 27,716.88 × 12,250.54
  4. Step 4: Simplify right side
    18,509.31x = 339,546,827.70
  5. Step 5: Solve for x
    x = 339,546,827.70/18,509.31
  6. Step 6: Final answer
    x = 18,344.65

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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.