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Finding the Fourth Proportional to 12,568.80, 18,850.09 and 4,248.64

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Solution

The fourth proportional to 12,568.80, 18,850.09 and 4,248.64 is: 6,371.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,568.80 : 18,850.09 = 4,248.64 : x
  2. Step 2: Convert to fraction form
    12,568.80/18,850.09 = 4,248.64/x
  3. Step 3: Cross multiply
    12,568.80x = 18,850.09 × 4,248.64
  4. Step 4: Simplify right side
    12,568.80x = 80,087,188.63
  5. Step 5: Solve for x
    x = 80,087,188.63/12,568.80
  6. Step 6: Final answer
    x = 6,371.90

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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.