Home / 27,919.40-41,879.10-7,141.80

Finding the Fourth Proportional to 27,919.40, 41,879.10 and 7,141.80

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Solution

The fourth proportional to 27,919.40, 41,879.10 and 7,141.80 is: 10,712.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,919.40 : 41,879.10 = 7,141.80 : x
  2. Step 2: Convert to fraction form
    27,919.40/41,879.10 = 7,141.80/x
  3. Step 3: Cross multiply
    27,919.40x = 41,879.10 × 7,141.80
  4. Step 4: Simplify right side
    27,919.40x = 299,092,156.38
  5. Step 5: Solve for x
    x = 299,092,156.38/27,919.40
  6. Step 6: Final answer
    x = 10,712.70

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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.