Home / 10,744.87-16,120.81-5,405.29

Finding the Fourth Proportional to 10,744.87, 16,120.81 and 5,405.29

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Solution

The fourth proportional to 10,744.87, 16,120.81 and 5,405.29 is: 8,109.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,744.87 : 16,120.81 = 5,405.29 : x
  2. Step 2: Convert to fraction form
    10,744.87/16,120.81 = 5,405.29/x
  3. Step 3: Cross multiply
    10,744.87x = 16,120.81 × 5,405.29
  4. Step 4: Simplify right side
    10,744.87x = 87,137,702.57
  5. Step 5: Solve for x
    x = 87,137,702.57/10,744.87
  6. Step 6: Final answer
    x = 8,109.70

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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.