Home / 13,422.26-20,124.20-6,835.70

Finding the Fourth Proportional to 13,422.26, 20,124.20 and 6,835.70

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Solution

The fourth proportional to 13,422.26, 20,124.20 and 6,835.70 is: 10,248.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,422.26 : 20,124.20 = 6,835.70 : x
  2. Step 2: Convert to fraction form
    13,422.26/20,124.20 = 6,835.70/x
  3. Step 3: Cross multiply
    13,422.26x = 20,124.20 × 6,835.70
  4. Step 4: Simplify right side
    13,422.26x = 137,562,993.94
  5. Step 5: Solve for x
    x = 137,562,993.94/13,422.26
  6. Step 6: Final answer
    x = 10,248.87

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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.