Home / 30,272.70-41,777.30-18,938.57

Finding the Fourth Proportional to 30,272.70, 41,777.30 and 18,938.57

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Solution

The fourth proportional to 30,272.70, 41,777.30 and 18,938.57 is: 26,135.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,272.70 : 41,777.30 = 18,938.57 : x
  2. Step 2: Convert to fraction form
    30,272.70/41,777.30 = 18,938.57/x
  3. Step 3: Cross multiply
    30,272.70x = 41,777.30 × 18,938.57
  4. Step 4: Simplify right side
    30,272.70x = 791,202,016.88
  5. Step 5: Solve for x
    x = 791,202,016.88/30,272.70
  6. Step 6: Final answer
    x = 26,135.83

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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.