Home / 20,519.98-30,781.46-7,372.46

Finding the Fourth Proportional to 20,519.98, 30,781.46 and 7,372.46

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Solution

The fourth proportional to 20,519.98, 30,781.46 and 7,372.46 is: 11,059.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,519.98 : 30,781.46 = 7,372.46 : x
  2. Step 2: Convert to fraction form
    20,519.98/30,781.46 = 7,372.46/x
  3. Step 3: Cross multiply
    20,519.98x = 30,781.46 × 7,372.46
  4. Step 4: Simplify right side
    20,519.98x = 226,935,082.59
  5. Step 5: Solve for x
    x = 226,935,082.59/20,519.98
  6. Step 6: Final answer
    x = 11,059.23

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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.