Home / 13,422.68-20,118.83-6,834.95

Finding the Fourth Proportional to 13,422.68, 20,118.83 and 6,834.95

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Solution

The fourth proportional to 13,422.68, 20,118.83 and 6,834.95 is: 10,244.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,422.68 : 20,118.83 = 6,834.95 : x
  2. Step 2: Convert to fraction form
    13,422.68/20,118.83 = 6,834.95/x
  3. Step 3: Cross multiply
    13,422.68x = 20,118.83 × 6,834.95
  4. Step 4: Simplify right side
    13,422.68x = 137,511,197.11
  5. Step 5: Solve for x
    x = 137,511,197.11/13,422.68
  6. Step 6: Final answer
    x = 10,244.69

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1.5x scale

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.