Home / 13,540.62-20,296.35-12,919.86

Finding the Fourth Proportional to 13,540.62, 20,296.35 and 12,919.86

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Solution

The fourth proportional to 13,540.62, 20,296.35 and 12,919.86 is: 19,365.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,540.62 : 20,296.35 = 12,919.86 : x
  2. Step 2: Convert to fraction form
    13,540.62/20,296.35 = 12,919.86/x
  3. Step 3: Cross multiply
    13,540.62x = 20,296.35 × 12,919.86
  4. Step 4: Simplify right side
    13,540.62x = 262,226,000.51
  5. Step 5: Solve for x
    x = 262,226,000.51/13,540.62
  6. Step 6: Final answer
    x = 19,365.88

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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.