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Finding the Fourth Proportional to 17,134.80, 25,678.20 and 13,630.80

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Solution

The fourth proportional to 17,134.80, 25,678.20 and 13,630.80 is: 20,427.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,134.80 : 25,678.20 = 13,630.80 : x
  2. Step 2: Convert to fraction form
    17,134.80/25,678.20 = 13,630.80/x
  3. Step 3: Cross multiply
    17,134.80x = 25,678.20 × 13,630.80
  4. Step 4: Simplify right side
    17,134.80x = 350,014,408.56
  5. Step 5: Solve for x
    x = 350,014,408.56/17,134.80
  6. Step 6: Final answer
    x = 20,427.11

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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.