Home / 12,760.79-19,147.66-5,739.38

Finding the Fourth Proportional to 12,760.79, 19,147.66 and 5,739.38

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Solution

The fourth proportional to 12,760.79, 19,147.66 and 5,739.38 is: 8,611.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,760.79 : 19,147.66 = 5,739.38 : x
  2. Step 2: Convert to fraction form
    12,760.79/19,147.66 = 5,739.38/x
  3. Step 3: Cross multiply
    12,760.79x = 19,147.66 × 5,739.38
  4. Step 4: Simplify right side
    12,760.79x = 109,895,658.57
  5. Step 5: Solve for x
    x = 109,895,658.57/12,760.79
  6. Step 6: Final answer
    x = 8,611.98

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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.