Home / 13,136.78-19,708.82-5,541.41

Finding the Fourth Proportional to 13,136.78, 19,708.82 and 5,541.41

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Solution

The fourth proportional to 13,136.78, 19,708.82 and 5,541.41 is: 8,313.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,136.78 : 19,708.82 = 5,541.41 : x
  2. Step 2: Convert to fraction form
    13,136.78/19,708.82 = 5,541.41/x
  3. Step 3: Cross multiply
    13,136.78x = 19,708.82 × 5,541.41
  4. Step 4: Simplify right side
    13,136.78x = 109,214,694.58
  5. Step 5: Solve for x
    x = 109,214,694.58/13,136.78
  6. Step 6: Final answer
    x = 8,313.66

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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.