Home / 30,861.26-42,556.68-26,399.78

Finding the Fourth Proportional to 30,861.26, 42,556.68 and 26,399.78

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Solution

The fourth proportional to 30,861.26, 42,556.68 and 26,399.78 is: 36,404.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,861.26 : 42,556.68 = 26,399.78 : x
  2. Step 2: Convert to fraction form
    30,861.26/42,556.68 = 26,399.78/x
  3. Step 3: Cross multiply
    30,861.26x = 42,556.68 × 26,399.78
  4. Step 4: Simplify right side
    30,861.26x = 1,123,486,989.53
  5. Step 5: Solve for x
    x = 1,123,486,989.53/30,861.26
  6. Step 6: Final answer
    x = 36,404.44

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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.