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Finding the Fourth Proportional to 18,261.66, 27,392.49 and 5,114.42

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Solution

The fourth proportional to 18,261.66, 27,392.49 and 5,114.42 is: 7,671.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,261.66 : 27,392.49 = 5,114.42 : x
  2. Step 2: Convert to fraction form
    18,261.66/27,392.49 = 5,114.42/x
  3. Step 3: Cross multiply
    18,261.66x = 27,392.49 × 5,114.42
  4. Step 4: Simplify right side
    18,261.66x = 140,096,561.74
  5. Step 5: Solve for x
    x = 140,096,561.74/18,261.66
  6. Step 6: Final answer
    x = 7,671.62

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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.