Home / 20,474.06-28,253.75-11,399.36

Finding the Fourth Proportional to 20,474.06, 28,253.75 and 11,399.36

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Solution

The fourth proportional to 20,474.06, 28,253.75 and 11,399.36 is: 15,730.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,474.06 : 28,253.75 = 11,399.36 : x
  2. Step 2: Convert to fraction form
    20,474.06/28,253.75 = 11,399.36/x
  3. Step 3: Cross multiply
    20,474.06x = 28,253.75 × 11,399.36
  4. Step 4: Simplify right side
    20,474.06x = 322,074,469.33
  5. Step 5: Solve for x
    x = 322,074,469.33/20,474.06
  6. Step 6: Final answer
    x = 15,730.86

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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.