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Finding the Fourth Proportional to 16,805.89, 25,208.82 and 5,119.11

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Solution

The fourth proportional to 16,805.89, 25,208.82 and 5,119.11 is: 7,678.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,805.89 : 25,208.82 = 5,119.11 : x
  2. Step 2: Convert to fraction form
    16,805.89/25,208.82 = 5,119.11/x
  3. Step 3: Cross multiply
    16,805.89x = 25,208.82 × 5,119.11
  4. Step 4: Simplify right side
    16,805.89x = 129,046,722.55
  5. Step 5: Solve for x
    x = 129,046,722.55/16,805.89
  6. Step 6: Final answer
    x = 7,678.66

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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.