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Finding the Fourth Proportional to 17,190.80, 25,812.60 and 9,414.80

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Solution

The fourth proportional to 17,190.80, 25,812.60 and 9,414.80 is: 14,136.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,190.80 : 25,812.60 = 9,414.80 : x
  2. Step 2: Convert to fraction form
    17,190.80/25,812.60 = 9,414.80/x
  3. Step 3: Cross multiply
    17,190.80x = 25,812.60 × 9,414.80
  4. Step 4: Simplify right side
    17,190.80x = 243,020,466.48
  5. Step 5: Solve for x
    x = 243,020,466.48/17,190.80
  6. Step 6: Final answer
    x = 14,136.66

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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.