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Finding the Fourth Proportional to 18,660.25, 27,986.03 and 5,332.88

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Solution

The fourth proportional to 18,660.25, 27,986.03 and 5,332.88 is: 7,998.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,660.25 : 27,986.03 = 5,332.88 : x
  2. Step 2: Convert to fraction form
    18,660.25/27,986.03 = 5,332.88/x
  3. Step 3: Cross multiply
    18,660.25x = 27,986.03 × 5,332.88
  4. Step 4: Simplify right side
    18,660.25x = 149,246,164.54
  5. Step 5: Solve for x
    x = 149,246,164.54/18,660.25
  6. Step 6: Final answer
    x = 7,998.08

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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.