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Finding the Fourth Proportional to 18,615.97, 27,929.15 and 7,530.42

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Solution

The fourth proportional to 18,615.97, 27,929.15 and 7,530.42 is: 11,297.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,615.97 : 27,929.15 = 7,530.42 : x
  2. Step 2: Convert to fraction form
    18,615.97/27,929.15 = 7,530.42/x
  3. Step 3: Cross multiply
    18,615.97x = 27,929.15 × 7,530.42
  4. Step 4: Simplify right side
    18,615.97x = 210,318,192.09
  5. Step 5: Solve for x
    x = 210,318,192.09/18,615.97
  6. Step 6: Final answer
    x = 11,297.73

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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.