Home / 20,099.87-27,739.52-11,150.25

Finding the Fourth Proportional to 20,099.87, 27,739.52 and 11,150.25

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Solution

The fourth proportional to 20,099.87, 27,739.52 and 11,150.25 is: 15,388.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,099.87 : 27,739.52 = 11,150.25 : x
  2. Step 2: Convert to fraction form
    20,099.87/27,739.52 = 11,150.25/x
  3. Step 3: Cross multiply
    20,099.87x = 27,739.52 × 11,150.25
  4. Step 4: Simplify right side
    20,099.87x = 309,302,527.13
  5. Step 5: Solve for x
    x = 309,302,527.13/20,099.87
  6. Step 6: Final answer
    x = 15,388.29

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.