Home / 13,542.35-20,310.59-3,681.72

Finding the Fourth Proportional to 13,542.35, 20,310.59 and 3,681.72

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Solution

The fourth proportional to 13,542.35, 20,310.59 and 3,681.72 is: 5,521.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,542.35 : 20,310.59 = 3,681.72 : x
  2. Step 2: Convert to fraction form
    13,542.35/20,310.59 = 3,681.72/x
  3. Step 3: Cross multiply
    13,542.35x = 20,310.59 × 3,681.72
  4. Step 4: Simplify right side
    13,542.35x = 74,777,914.62
  5. Step 5: Solve for x
    x = 74,777,914.62/13,542.35
  6. Step 6: Final answer
    x = 5,521.78

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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.