Home / 12,136.76-18,206.12-3,371.67

Finding the Fourth Proportional to 12,136.76, 18,206.12 and 3,371.67

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Solution

The fourth proportional to 12,136.76, 18,206.12 and 3,371.67 is: 5,057.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,136.76 : 18,206.12 = 3,371.67 : x
  2. Step 2: Convert to fraction form
    12,136.76/18,206.12 = 3,371.67/x
  3. Step 3: Cross multiply
    12,136.76x = 18,206.12 × 3,371.67
  4. Step 4: Simplify right side
    12,136.76x = 61,385,011.76
  5. Step 5: Solve for x
    x = 61,385,011.76/12,136.76
  6. Step 6: Final answer
    x = 5,057.78

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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.