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Finding the Fourth Proportional to 18,215.25, 27,304.64 and 7,106.66

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Solution

The fourth proportional to 18,215.25, 27,304.64 and 7,106.66 is: 10,652.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,215.25 : 27,304.64 = 7,106.66 : x
  2. Step 2: Convert to fraction form
    18,215.25/27,304.64 = 7,106.66/x
  3. Step 3: Cross multiply
    18,215.25x = 27,304.64 × 7,106.66
  4. Step 4: Simplify right side
    18,215.25x = 194,044,620.85
  5. Step 5: Solve for x
    x = 194,044,620.85/18,215.25
  6. Step 6: Final answer
    x = 10,652.87

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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.