Home / 26,452.80-39,679.20-20,613.78

Finding the Fourth Proportional to 26,452.80, 39,679.20 and 20,613.78

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Solution

The fourth proportional to 26,452.80, 39,679.20 and 20,613.78 is: 30,920.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,452.80 : 39,679.20 = 20,613.78 : x
  2. Step 2: Convert to fraction form
    26,452.80/39,679.20 = 20,613.78/x
  3. Step 3: Cross multiply
    26,452.80x = 39,679.20 × 20,613.78
  4. Step 4: Simplify right side
    26,452.80x = 817,938,299.38
  5. Step 5: Solve for x
    x = 817,938,299.38/26,452.80
  6. Step 6: Final answer
    x = 30,920.67

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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.