Home / 13,756.26-20,621.84-4,989.23

Finding the Fourth Proportional to 13,756.26, 20,621.84 and 4,989.23

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Solution

The fourth proportional to 13,756.26, 20,621.84 and 4,989.23 is: 7,479.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,756.26 : 20,621.84 = 4,989.23 : x
  2. Step 2: Convert to fraction form
    13,756.26/20,621.84 = 4,989.23/x
  3. Step 3: Cross multiply
    13,756.26x = 20,621.84 × 4,989.23
  4. Step 4: Simplify right side
    13,756.26x = 102,886,974.73
  5. Step 5: Solve for x
    x = 102,886,974.73/13,756.26
  6. Step 6: Final answer
    x = 7,479.28

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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.