Home / 19,278.20-28,902.90-8,175.80

Finding the Fourth Proportional to 19,278.20, 28,902.90 and 8,175.80

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Solution

The fourth proportional to 19,278.20, 28,902.90 and 8,175.80 is: 12,257.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,278.20 : 28,902.90 = 8,175.80 : x
  2. Step 2: Convert to fraction form
    19,278.20/28,902.90 = 8,175.80/x
  3. Step 3: Cross multiply
    19,278.20x = 28,902.90 × 8,175.80
  4. Step 4: Simplify right side
    19,278.20x = 236,304,329.82
  5. Step 5: Solve for x
    x = 236,304,329.82/19,278.20
  6. Step 6: Final answer
    x = 12,257.59

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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.