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Finding the Fourth Proportional to 18,671.42, 27,941.31 and 11,654.73

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Solution

The fourth proportional to 18,671.42, 27,941.31 and 11,654.73 is: 17,441.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,671.42 : 27,941.31 = 11,654.73 : x
  2. Step 2: Convert to fraction form
    18,671.42/27,941.31 = 11,654.73/x
  3. Step 3: Cross multiply
    18,671.42x = 27,941.31 × 11,654.73
  4. Step 4: Simplify right side
    18,671.42x = 325,648,423.90
  5. Step 5: Solve for x
    x = 325,648,423.90/18,671.42
  6. Step 6: Final answer
    x = 17,441.01

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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.