Home / 13,687.45-20,531.96-3,826.69

Finding the Fourth Proportional to 13,687.45, 20,531.96 and 3,826.69

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Solution

The fourth proportional to 13,687.45, 20,531.96 and 3,826.69 is: 5,740.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,687.45 : 20,531.96 = 3,826.69 : x
  2. Step 2: Convert to fraction form
    13,687.45/20,531.96 = 3,826.69/x
  3. Step 3: Cross multiply
    13,687.45x = 20,531.96 × 3,826.69
  4. Step 4: Simplify right side
    13,687.45x = 78,569,526.92
  5. Step 5: Solve for x
    x = 78,569,526.92/13,687.45
  6. Step 6: Final answer
    x = 5,740.26

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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.