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Finding the Fourth Proportional to 18,294.56, 25,242 and 12,634.32

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Solution

The fourth proportional to 18,294.56, 25,242 and 12,634.32 is: 17,432.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,294.56 : 25,242 = 12,634.32 : x
  2. Step 2: Convert to fraction form
    18,294.56/25,242 = 12,634.32/x
  3. Step 3: Cross multiply
    18,294.56x = 25,242 × 12,634.32
  4. Step 4: Simplify right side
    18,294.56x = 318,915,505.44
  5. Step 5: Solve for x
    x = 318,915,505.44/18,294.56
  6. Step 6: Final answer
    x = 17,432.26

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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.