Home / 13,422.76-20,121.80-4,651.54

Finding the Fourth Proportional to 13,422.76, 20,121.80 and 4,651.54

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Solution

The fourth proportional to 13,422.76, 20,121.80 and 4,651.54 is: 6,973.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,422.76 : 20,121.80 = 4,651.54 : x
  2. Step 2: Convert to fraction form
    13,422.76/20,121.80 = 4,651.54/x
  3. Step 3: Cross multiply
    13,422.76x = 20,121.80 × 4,651.54
  4. Step 4: Simplify right side
    13,422.76x = 93,597,357.57
  5. Step 5: Solve for x
    x = 93,597,357.57/13,422.76
  6. Step 6: Final answer
    x = 6,973.03

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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.