Home / 13,729.80-20,587.02-5,519.88

Finding the Fourth Proportional to 13,729.80, 20,587.02 and 5,519.88

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Solution

The fourth proportional to 13,729.80, 20,587.02 and 5,519.88 is: 8,276.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,729.80 : 20,587.02 = 5,519.88 : x
  2. Step 2: Convert to fraction form
    13,729.80/20,587.02 = 5,519.88/x
  3. Step 3: Cross multiply
    13,729.80x = 20,587.02 × 5,519.88
  4. Step 4: Simplify right side
    13,729.80x = 113,637,879.96
  5. Step 5: Solve for x
    x = 113,637,879.96/13,729.80
  6. Step 6: Final answer
    x = 8,276.73

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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.