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Finding the Fourth Proportional to 17,238.80, 25,825.80 and 8,890.40

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Solution

The fourth proportional to 17,238.80, 25,825.80 and 8,890.40 is: 13,318.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,238.80 : 25,825.80 = 8,890.40 : x
  2. Step 2: Convert to fraction form
    17,238.80/25,825.80 = 8,890.40/x
  3. Step 3: Cross multiply
    17,238.80x = 25,825.80 × 8,890.40
  4. Step 4: Simplify right side
    17,238.80x = 229,601,692.32
  5. Step 5: Solve for x
    x = 229,601,692.32/17,238.80
  6. Step 6: Final answer
    x = 13,318.89

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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.