Home / 20,218.78-30,332.78-6,180.80

Finding the Fourth Proportional to 20,218.78, 30,332.78 and 6,180.80

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Solution

The fourth proportional to 20,218.78, 30,332.78 and 6,180.80 is: 9,272.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,218.78 : 30,332.78 = 6,180.80 : x
  2. Step 2: Convert to fraction form
    20,218.78/30,332.78 = 6,180.80/x
  3. Step 3: Cross multiply
    20,218.78x = 30,332.78 × 6,180.80
  4. Step 4: Simplify right side
    20,218.78x = 187,480,846.62
  5. Step 5: Solve for x
    x = 187,480,846.62/20,218.78
  6. Step 6: Final answer
    x = 9,272.61

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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.