Home / 30,245.62-41,743.50-21,775.78

Finding the Fourth Proportional to 30,245.62, 41,743.50 and 21,775.78

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Solution

The fourth proportional to 30,245.62, 41,743.50 and 21,775.78 is: 30,053.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,245.62 : 41,743.50 = 21,775.78 : x
  2. Step 2: Convert to fraction form
    30,245.62/41,743.50 = 21,775.78/x
  3. Step 3: Cross multiply
    30,245.62x = 41,743.50 × 21,775.78
  4. Step 4: Simplify right side
    30,245.62x = 908,997,272.43
  5. Step 5: Solve for x
    x = 908,997,272.43/30,245.62
  6. Step 6: Final answer
    x = 30,053.85

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.