Home / 20,278.62-30,388.77-8,575.74

Finding the Fourth Proportional to 20,278.62, 30,388.77 and 8,575.74

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Solution

The fourth proportional to 20,278.62, 30,388.77 and 8,575.74 is: 12,851.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,278.62 : 30,388.77 = 8,575.74 : x
  2. Step 2: Convert to fraction form
    20,278.62/30,388.77 = 8,575.74/x
  3. Step 3: Cross multiply
    20,278.62x = 30,388.77 × 8,575.74
  4. Step 4: Simplify right side
    20,278.62x = 260,606,190.44
  5. Step 5: Solve for x
    x = 260,606,190.44/20,278.62
  6. Step 6: Final answer
    x = 12,851.28

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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.