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Finding the Fourth Proportional to 18,571.68, 25,636.50 and 13,847.76

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Solution

The fourth proportional to 18,571.68, 25,636.50 and 13,847.76 is: 19,115.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,571.68 : 25,636.50 = 13,847.76 : x
  2. Step 2: Convert to fraction form
    18,571.68/25,636.50 = 13,847.76/x
  3. Step 3: Cross multiply
    18,571.68x = 25,636.50 × 13,847.76
  4. Step 4: Simplify right side
    18,571.68x = 355,008,099.24
  5. Step 5: Solve for x
    x = 355,008,099.24/18,571.68
  6. Step 6: Final answer
    x = 19,115.56

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.