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Finding the Fourth Proportional to 17,289.98, 25,936.32 and 8,520.11

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Solution

The fourth proportional to 17,289.98, 25,936.32 and 8,520.11 is: 12,780.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,289.98 : 25,936.32 = 8,520.11 : x
  2. Step 2: Convert to fraction form
    17,289.98/25,936.32 = 8,520.11/x
  3. Step 3: Cross multiply
    17,289.98x = 25,936.32 × 8,520.11
  4. Step 4: Simplify right side
    17,289.98x = 220,980,169.71
  5. Step 5: Solve for x
    x = 220,980,169.71/17,289.98
  6. Step 6: Final answer
    x = 12,780.83

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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.