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Finding the Fourth Proportional to 17,401.60, 26,086.20 and 12,136.60

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Solution

The fourth proportional to 17,401.60, 26,086.20 and 12,136.60 is: 18,193.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,401.60 : 26,086.20 = 12,136.60 : x
  2. Step 2: Convert to fraction form
    17,401.60/26,086.20 = 12,136.60/x
  3. Step 3: Cross multiply
    17,401.60x = 26,086.20 × 12,136.60
  4. Step 4: Simplify right side
    17,401.60x = 316,597,774.92
  5. Step 5: Solve for x
    x = 316,597,774.92/17,401.60
  6. Step 6: Final answer
    x = 18,193.60

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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.