Home / 27,136.79-40,704.82-12,139.94

Finding the Fourth Proportional to 27,136.79, 40,704.82 and 12,139.94

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Solution

The fourth proportional to 27,136.79, 40,704.82 and 12,139.94 is: 18,209.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,136.79 : 40,704.82 = 12,139.94 : x
  2. Step 2: Convert to fraction form
    27,136.79/40,704.82 = 12,139.94/x
  3. Step 3: Cross multiply
    27,136.79x = 40,704.82 × 12,139.94
  4. Step 4: Simplify right side
    27,136.79x = 494,154,143.92
  5. Step 5: Solve for x
    x = 494,154,143.92/27,136.79
  6. Step 6: Final answer
    x = 18,209.75

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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.