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Finding the Fourth Proportional to 12,398.64, 18,604.38 and 8,241.54

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Solution

The fourth proportional to 12,398.64, 18,604.38 and 8,241.54 is: 12,366.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,398.64 : 18,604.38 = 8,241.54 : x
  2. Step 2: Convert to fraction form
    12,398.64/18,604.38 = 8,241.54/x
  3. Step 3: Cross multiply
    12,398.64x = 18,604.38 × 8,241.54
  4. Step 4: Simplify right side
    12,398.64x = 153,328,741.95
  5. Step 5: Solve for x
    x = 153,328,741.95/12,398.64
  6. Step 6: Final answer
    x = 12,366.58

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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.