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Finding the Fourth Proportional to 18,167.80, 27,251.70 and 11,574.40

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Solution

The fourth proportional to 18,167.80, 27,251.70 and 11,574.40 is: 17,361.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,167.80 : 27,251.70 = 11,574.40 : x
  2. Step 2: Convert to fraction form
    18,167.80/27,251.70 = 11,574.40/x
  3. Step 3: Cross multiply
    18,167.80x = 27,251.70 × 11,574.40
  4. Step 4: Simplify right side
    18,167.80x = 315,422,076.48
  5. Step 5: Solve for x
    x = 315,422,076.48/18,167.80
  6. Step 6: Final answer
    x = 17,361.60

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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.