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Finding the Fourth Proportional to 16,805.70, 25,212.29 and 5,119.83

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Solution

The fourth proportional to 16,805.70, 25,212.29 and 5,119.83 is: 7,680.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,805.70 : 25,212.29 = 5,119.83 : x
  2. Step 2: Convert to fraction form
    16,805.70/25,212.29 = 5,119.83/x
  3. Step 3: Cross multiply
    16,805.70x = 25,212.29 × 5,119.83
  4. Step 4: Simplify right side
    16,805.70x = 129,082,613.11
  5. Step 5: Solve for x
    x = 129,082,613.11/16,805.70
  6. Step 6: Final answer
    x = 7,680.88

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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.