Home / 15,198.42-20,977.30-8,912.82

Finding the Fourth Proportional to 15,198.42, 20,977.30 and 8,912.82

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Solution

The fourth proportional to 15,198.42, 20,977.30 and 8,912.82 is: 12,301.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,198.42 : 20,977.30 = 8,912.82 : x
  2. Step 2: Convert to fraction form
    15,198.42/20,977.30 = 8,912.82/x
  3. Step 3: Cross multiply
    15,198.42x = 20,977.30 × 8,912.82
  4. Step 4: Simplify right side
    15,198.42x = 186,966,898.99
  5. Step 5: Solve for x
    x = 186,966,898.99/15,198.42
  6. Step 6: Final answer
    x = 12,301.73

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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.