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Finding the Fourth Proportional to 17,011.80, 25,515.90 and 5,324.40

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Solution

The fourth proportional to 17,011.80, 25,515.90 and 5,324.40 is: 7,986.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,011.80 : 25,515.90 = 5,324.40 : x
  2. Step 2: Convert to fraction form
    17,011.80/25,515.90 = 5,324.40/x
  3. Step 3: Cross multiply
    17,011.80x = 25,515.90 × 5,324.40
  4. Step 4: Simplify right side
    17,011.80x = 135,856,857.96
  5. Step 5: Solve for x
    x = 135,856,857.96/17,011.80
  6. Step 6: Final answer
    x = 7,986.04

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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.