Home / 13,687.94-20,515.50-5,362.76

Finding the Fourth Proportional to 13,687.94, 20,515.50 and 5,362.76

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Solution

The fourth proportional to 13,687.94, 20,515.50 and 5,362.76 is: 8,037.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,687.94 : 20,515.50 = 5,362.76 : x
  2. Step 2: Convert to fraction form
    13,687.94/20,515.50 = 5,362.76/x
  3. Step 3: Cross multiply
    13,687.94x = 20,515.50 × 5,362.76
  4. Step 4: Simplify right side
    13,687.94x = 110,019,600.20
  5. Step 5: Solve for x
    x = 110,019,600.20/13,687.94
  6. Step 6: Final answer
    x = 8,037.71

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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.