Home / 15,198.18-20,974.55-8,485.13

Finding the Fourth Proportional to 15,198.18, 20,974.55 and 8,485.13

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Solution

The fourth proportional to 15,198.18, 20,974.55 and 8,485.13 is: 11,710.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,198.18 : 20,974.55 = 8,485.13 : x
  2. Step 2: Convert to fraction form
    15,198.18/20,974.55 = 8,485.13/x
  3. Step 3: Cross multiply
    15,198.18x = 20,974.55 × 8,485.13
  4. Step 4: Simplify right side
    15,198.18x = 177,971,783.44
  5. Step 5: Solve for x
    x = 177,971,783.44/15,198.18
  6. Step 6: Final answer
    x = 11,710.07

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.