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Finding the Fourth Proportional to 16,808, 25,211.52 and 5,119.52

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Solution

The fourth proportional to 16,808, 25,211.52 and 5,119.52 is: 7,679.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,808 : 25,211.52 = 5,119.52 : x
  2. Step 2: Convert to fraction form
    16,808/25,211.52 = 5,119.52/x
  3. Step 3: Cross multiply
    16,808x = 25,211.52 × 5,119.52
  4. Step 4: Simplify right side
    16,808x = 129,070,880.87
  5. Step 5: Solve for x
    x = 129,070,880.87/16,808
  6. Step 6: Final answer
    x = 7,679.13

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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.