Home / 13,406.31-20,110.49-3,545.33

Finding the Fourth Proportional to 13,406.31, 20,110.49 and 3,545.33

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Solution

The fourth proportional to 13,406.31, 20,110.49 and 3,545.33 is: 5,318.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,406.31 : 20,110.49 = 3,545.33 : x
  2. Step 2: Convert to fraction form
    13,406.31/20,110.49 = 3,545.33/x
  3. Step 3: Cross multiply
    13,406.31x = 20,110.49 × 3,545.33
  4. Step 4: Simplify right side
    13,406.31x = 71,298,364.92
  5. Step 5: Solve for x
    x = 71,298,364.92/13,406.31
  6. Step 6: Final answer
    x = 5,318.27

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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.