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Finding the Fourth Proportional to 18,523.40, 27,794.20 and 8,661.24

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Solution

The fourth proportional to 18,523.40, 27,794.20 and 8,661.24 is: 12,996.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,523.40 : 27,794.20 = 8,661.24 : x
  2. Step 2: Convert to fraction form
    18,523.40/27,794.20 = 8,661.24/x
  3. Step 3: Cross multiply
    18,523.40x = 27,794.20 × 8,661.24
  4. Step 4: Simplify right side
    18,523.40x = 240,732,236.81
  5. Step 5: Solve for x
    x = 240,732,236.81/18,523.40
  6. Step 6: Final answer
    x = 12,996.12

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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.