Home / 13,621.62-20,435.73-5,719.80

Finding the Fourth Proportional to 13,621.62, 20,435.73 and 5,719.80

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Solution

The fourth proportional to 13,621.62, 20,435.73 and 5,719.80 is: 8,581.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,621.62 : 20,435.73 = 5,719.80 : x
  2. Step 2: Convert to fraction form
    13,621.62/20,435.73 = 5,719.80/x
  3. Step 3: Cross multiply
    13,621.62x = 20,435.73 × 5,719.80
  4. Step 4: Simplify right side
    13,621.62x = 116,888,288.45
  5. Step 5: Solve for x
    x = 116,888,288.45/13,621.62
  6. Step 6: Final answer
    x = 8,581.09

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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.