Home / 12,916.36-19,379.67-5,520.61

Finding the Fourth Proportional to 12,916.36, 19,379.67 and 5,520.61

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Solution

The fourth proportional to 12,916.36, 19,379.67 and 5,520.61 is: 8,283.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,916.36 : 19,379.67 = 5,520.61 : x
  2. Step 2: Convert to fraction form
    12,916.36/19,379.67 = 5,520.61/x
  3. Step 3: Cross multiply
    12,916.36x = 19,379.67 × 5,520.61
  4. Step 4: Simplify right side
    12,916.36x = 106,987,600.00
  5. Step 5: Solve for x
    x = 106,987,600.00/12,916.36
  6. Step 6: Final answer
    x = 8,283.11

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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.