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Finding the Fourth Proportional to 18,571.64, 27,865.67 and 7,499.96

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Solution

The fourth proportional to 18,571.64, 27,865.67 and 7,499.96 is: 11,253.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,571.64 : 27,865.67 = 7,499.96 : x
  2. Step 2: Convert to fraction form
    18,571.64/27,865.67 = 7,499.96/x
  3. Step 3: Cross multiply
    18,571.64x = 27,865.67 × 7,499.96
  4. Step 4: Simplify right side
    18,571.64x = 208,991,289.79
  5. Step 5: Solve for x
    x = 208,991,289.79/18,571.64
  6. Step 6: Final answer
    x = 11,253.25

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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.