Home / 13,685.88-20,528.52-3,824.96

Finding the Fourth Proportional to 13,685.88, 20,528.52 and 3,824.96

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Solution

The fourth proportional to 13,685.88, 20,528.52 and 3,824.96 is: 5,737.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,685.88 : 20,528.52 = 3,824.96 : x
  2. Step 2: Convert to fraction form
    13,685.88/20,528.52 = 3,824.96/x
  3. Step 3: Cross multiply
    13,685.88x = 20,528.52 × 3,824.96
  4. Step 4: Simplify right side
    13,685.88x = 78,520,767.86
  5. Step 5: Solve for x
    x = 78,520,767.86/13,685.88
  6. Step 6: Final answer
    x = 5,737.36

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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.