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Finding the Fourth Proportional to 18,329.70, 27,475.83 and 7,221.11

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Solution

The fourth proportional to 18,329.70, 27,475.83 and 7,221.11 is: 10,824.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,329.70 : 27,475.83 = 7,221.11 : x
  2. Step 2: Convert to fraction form
    18,329.70/27,475.83 = 7,221.11/x
  3. Step 3: Cross multiply
    18,329.70x = 27,475.83 × 7,221.11
  4. Step 4: Simplify right side
    18,329.70x = 198,405,853.39
  5. Step 5: Solve for x
    x = 198,405,853.39/18,329.70
  6. Step 6: Final answer
    x = 10,824.28

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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.