Home / 15,198.36-22,806.20-12,139.80

Finding the Fourth Proportional to 15,198.36, 22,806.20 and 12,139.80

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Solution

The fourth proportional to 15,198.36, 22,806.20 and 12,139.80 is: 18,216.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,198.36 : 22,806.20 = 12,139.80 : x
  2. Step 2: Convert to fraction form
    15,198.36/22,806.20 = 12,139.80/x
  3. Step 3: Cross multiply
    15,198.36x = 22,806.20 × 12,139.80
  4. Step 4: Simplify right side
    15,198.36x = 276,862,706.76
  5. Step 5: Solve for x
    x = 276,862,706.76/15,198.36
  6. Step 6: Final answer
    x = 18,216.62

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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.