Home / 13,819.61-20,729.45-8,252.96

Finding the Fourth Proportional to 13,819.61, 20,729.45 and 8,252.96

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Solution

The fourth proportional to 13,819.61, 20,729.45 and 8,252.96 is: 12,379.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,819.61 : 20,729.45 = 8,252.96 : x
  2. Step 2: Convert to fraction form
    13,819.61/20,729.45 = 8,252.96/x
  3. Step 3: Cross multiply
    13,819.61x = 20,729.45 × 8,252.96
  4. Step 4: Simplify right side
    13,819.61x = 171,079,238.66
  5. Step 5: Solve for x
    x = 171,079,238.66/13,819.61
  6. Step 6: Final answer
    x = 12,379.45

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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.