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Finding the Fourth Proportional to 12,453.42, 18,654.62 and 9,974.82

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Solution

The fourth proportional to 12,453.42, 18,654.62 and 9,974.82 is: 14,941.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,453.42 : 18,654.62 = 9,974.82 : x
  2. Step 2: Convert to fraction form
    12,453.42/18,654.62 = 9,974.82/x
  3. Step 3: Cross multiply
    12,453.42x = 18,654.62 × 9,974.82
  4. Step 4: Simplify right side
    12,453.42x = 186,076,426.79
  5. Step 5: Solve for x
    x = 186,076,426.79/12,453.42
  6. Step 6: Final answer
    x = 14,941.79

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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.