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Finding the Fourth Proportional to 14,257.12, 19,675 and 7,969.60

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Solution

The fourth proportional to 14,257.12, 19,675 and 7,969.60 is: 10,998.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,257.12 : 19,675 = 7,969.60 : x
  2. Step 2: Convert to fraction form
    14,257.12/19,675 = 7,969.60/x
  3. Step 3: Cross multiply
    14,257.12x = 19,675 × 7,969.60
  4. Step 4: Simplify right side
    14,257.12x = 156,801,880
  5. Step 5: Solve for x
    x = 156,801,880/14,257.12
  6. Step 6: Final answer
    x = 10,998.15

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.