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Finding the Fourth Proportional to 17,216.50, 25,800.50 and 13,690.86

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Solution

The fourth proportional to 17,216.50, 25,800.50 and 13,690.86 is: 20,517.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,216.50 : 25,800.50 = 13,690.86 : x
  2. Step 2: Convert to fraction form
    17,216.50/25,800.50 = 13,690.86/x
  3. Step 3: Cross multiply
    17,216.50x = 25,800.50 × 13,690.86
  4. Step 4: Simplify right side
    17,216.50x = 353,231,033.43
  5. Step 5: Solve for x
    x = 353,231,033.43/17,216.50
  6. Step 6: Final answer
    x = 20,517.01

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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.