Home / 20,305.04-28,021.33-11,351.59

Finding the Fourth Proportional to 20,305.04, 28,021.33 and 11,351.59

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Solution

The fourth proportional to 20,305.04, 28,021.33 and 11,351.59 is: 15,665.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,305.04 : 28,021.33 = 11,351.59 : x
  2. Step 2: Convert to fraction form
    20,305.04/28,021.33 = 11,351.59/x
  3. Step 3: Cross multiply
    20,305.04x = 28,021.33 × 11,351.59
  4. Step 4: Simplify right side
    20,305.04x = 318,086,452.55
  5. Step 5: Solve for x
    x = 318,086,452.55/20,305.04
  6. Step 6: Final answer
    x = 15,665.39

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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.