Home / 20,885.75-31,329.68-6,095.78

Finding the Fourth Proportional to 20,885.75, 31,329.68 and 6,095.78

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Solution

The fourth proportional to 20,885.75, 31,329.68 and 6,095.78 is: 9,143.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,885.75 : 31,329.68 = 6,095.78 : x
  2. Step 2: Convert to fraction form
    20,885.75/31,329.68 = 6,095.78/x
  3. Step 3: Cross multiply
    20,885.75x = 31,329.68 × 6,095.78
  4. Step 4: Simplify right side
    20,885.75x = 190,978,649.62
  5. Step 5: Solve for x
    x = 190,978,649.62/20,885.75
  6. Step 6: Final answer
    x = 9,143.97

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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.