Home / 19,760.24-29,640.36-7,919.38

Finding the Fourth Proportional to 19,760.24, 29,640.36 and 7,919.38

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Solution

The fourth proportional to 19,760.24, 29,640.36 and 7,919.38 is: 11,879.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,760.24 : 29,640.36 = 7,919.38 : x
  2. Step 2: Convert to fraction form
    19,760.24/29,640.36 = 7,919.38/x
  3. Step 3: Cross multiply
    19,760.24x = 29,640.36 × 7,919.38
  4. Step 4: Simplify right side
    19,760.24x = 234,733,274.18
  5. Step 5: Solve for x
    x = 234,733,274.18/19,760.24
  6. Step 6: Final answer
    x = 11,879.07

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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.