Home / 18,821.76-28,197.73-13,473.90

Finding the Fourth Proportional to 18,821.76, 28,197.73 and 13,473.90

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Solution

The fourth proportional to 18,821.76, 28,197.73 and 13,473.90 is: 20,185.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,821.76 : 28,197.73 = 13,473.90 : x
  2. Step 2: Convert to fraction form
    18,821.76/28,197.73 = 13,473.90/x
  3. Step 3: Cross multiply
    18,821.76x = 28,197.73 × 13,473.90
  4. Step 4: Simplify right side
    18,821.76x = 379,933,407.23
  5. Step 5: Solve for x
    x = 379,933,407.23/18,821.76
  6. Step 6: Final answer
    x = 20,185.86

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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.