Home / 20,175.31-30,231.33-12,764.12

Finding the Fourth Proportional to 20,175.31, 30,231.33 and 12,764.12

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Solution

The fourth proportional to 20,175.31, 30,231.33 and 12,764.12 is: 19,126.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,175.31 : 30,231.33 = 12,764.12 : x
  2. Step 2: Convert to fraction form
    20,175.31/30,231.33 = 12,764.12/x
  3. Step 3: Cross multiply
    20,175.31x = 30,231.33 × 12,764.12
  4. Step 4: Simplify right side
    20,175.31x = 385,876,124.86
  5. Step 5: Solve for x
    x = 385,876,124.86/20,175.31
  6. Step 6: Final answer
    x = 19,126.15

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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.