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Finding the Fourth Proportional to 18,011.71, 27,015.44 and 4,865.11

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Solution

The fourth proportional to 18,011.71, 27,015.44 and 4,865.11 is: 7,297.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,011.71 : 27,015.44 = 4,865.11 : x
  2. Step 2: Convert to fraction form
    18,011.71/27,015.44 = 4,865.11/x
  3. Step 3: Cross multiply
    18,011.71x = 27,015.44 × 4,865.11
  4. Step 4: Simplify right side
    18,011.71x = 131,433,087.30
  5. Step 5: Solve for x
    x = 131,433,087.30/18,011.71
  6. Step 6: Final answer
    x = 7,297.09

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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.