Home / 13,136.18-19,696.32-5,239.89

Finding the Fourth Proportional to 13,136.18, 19,696.32 and 5,239.89

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Solution

The fourth proportional to 13,136.18, 19,696.32 and 5,239.89 is: 7,856.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,136.18 : 19,696.32 = 5,239.89 : x
  2. Step 2: Convert to fraction form
    13,136.18/19,696.32 = 5,239.89/x
  3. Step 3: Cross multiply
    13,136.18x = 19,696.32 × 5,239.89
  4. Step 4: Simplify right side
    13,136.18x = 103,206,550.20
  5. Step 5: Solve for x
    x = 103,206,550.20/13,136.18
  6. Step 6: Final answer
    x = 7,856.67

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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.